Most of these I made in 2016-2017.
x = 8192, n = int(t / x) + 1, pow((n*t % 512)/200+2,(n*t % 512)/300+2);
-(int(t / (1 << 9) + 1/2) % 2) + (2 * (int(t / (1 << 9) + 1/2) % 2) - 1) * (128 - pow(1 - pow(((t + 256) % 512) / 256 - 1, 2), 1/2) * 128)
1/4*((2*int(10*t/(1<<8) % 2) - 1) + (2*int(pow(2,7/12)*10*t/(1<<8) % 2) - 1) + (2*int(20*t/(1<<8) % 2) - 1) + (2*int(pow(2,1/3)*20*t/(1<<8) % 2) - 1))
c = int(t / (1 << 12)), d = int(pow(2*c + 9/4, 1/2) - 1/2), e = pow(d + 1/2, 2)/2 - 9/8, g = c - e, h = 1 + g / d, 2 * t * h
k = 2000, c = 2 * int(t / (k << 6)) + 1, t * (int(t/k) % (1 << 6) & c)
n = 4, t % int((-n + sqrt(n*(n + 8*t)))/(2*n))
n = 21, t * (t >> 12 ^ n) & (t >> 12) - t * (t >> 12 ^ n)
pi = 3.1415926535898, pow(tan(15.9995*t/256*pi), 2)
p = function(n) { c = t >> 11; if (c % n) return 0; else return t * n % 256 }, s = function(n) { a = 0; for (var i = 1; i <= n; i++) { a += p(i); } return a / n; }, s(20)
l = function(n) { c = (t >> 11) + 1; for (i = n; i >= 1; i--) { if (c % i == 0) return i; } }, t*l(20)
sum = function (n) { var a = 0; for (var i = 1; i < n; i++) { a = a + sin((t * i) / 32); } return a / n; }, sum(1 + (t >> 12)) * 128 + 128
(t>>8)*sin(t/10) + 128
128*sin((t>>13)*t/60) + 128
a = [3,1,4,1,5,9,2,6,5,3,5,8,9,7,9,3,2,3,8,4], times37 = function(l) { for (var i = 0; i < 20; i++) { l[i] = l[i]*37; } return l; }, carry = function(l) { for (var i = 1; i < 20; i++) { l[i - 1] += floor(l[i] / 10); l[i] = l[i] % 10; } return l; }, b = [0,1,2,3,4,5,0,0,0,0], doit = function(l) { for (var n = 0; n < 10; n++) { l[n] = a[0], a[0] = 0, a = times37(a), a = carry(a), a = carry(a), a = carry(a); } return l; }, b = doit(b), t * pow(2, b[(t>>13) % 10]/12)
sum = function(n) { s = 0; for (var x = 0; x < n; x++) { s += (t * pow(2, x / n) / n) % (256 / n); } return s; }, sum((t >> 15) + 1)
q = 1 << 15, int((t % q)*(2 + int(t / q))/q)*t
q = 1 << 15, (1 + int((t % q)*(2 + int(t / q))/q)/(int(t / q) + 1))*t
((t*((t >> 12) % 4 + 1) * ((t >> 14) % 4 + 1) ^ 7) & 5*(t >> 14)) ^ (69 * t / 10000)
a = t >> 9, c = t >> 12, t*((c + 1 ^ c >> 2) % 16) + 128*sin(t*((a + 1 >> 5) - (a >> 5)))
128*sin(t/(t >> 11))*sin(t/10) + 128
a = t >> 9, c = t >> 12, t*((c + 1 ^ c >> 2) % 16) + (128 + 128*sin(t)) % (10000 / (t % (1 << 14)))
w = function(n) { if (n == 0) { return 96; } else { return int(7/4*n - 5/4); } }, d = [6,0,2,8,3,1,8,5,3,0,7,1,7,9,5,8,6,4,7,6,9,2,5,2,8,6,7,6,6,5,5,9,0,0,5,7,6,8,3,9,4,3,3,8,7,9,8,7,5,0,2,1,1,6,4,1,9,4,9,8,8,9,1,8,4,6,1,5,6,3,2,8,1,2,5,7,2,4,1,7,9,9,7,2,5,6,0,6,9,6,5,0,6,8,4,2,3,4,1,3,5,9,6,4,2,9,6,1,7,3,0,2,6,5,6,4,6,1,3,2,9,4,1,8,7,6,8,9,2,1,9,1,0,1,1,6,4,4,6,3,4,5,0,7,1,8,8,1,6,2,5,6,9,6,2,2,3,4,9,0,0,5,6,8,2,0,5,4,0,3,8,7,7,0,4,2,2,1,1,1,1,9,2,8,9,2,4,5,8,9,7,9,0,9,8,6,0,7,6,3,9,2,8,8,5,7,6,2,1,9,5,1,3,3,1,8,6,6,8,9,2,2,5,6,9,5,1,2,9,6,4,6,7,5,7,3,5,6,6,3,3,0,5,4,2,4,0,3,8,1,8,2,9,1,2,9,7,1,3,3,8,4,6,9,2,0,6,9,7,2,2,0,9,0,8,6,5,3,2,9,6,4,2,6,7,8,7,2,1,4,5,2,0,4,9,8,2,8,2,5,4,7,4,4,9,1,7,4,0,1,3,2,1,2,6,3,1,1,7,6,3,4,9,7,6,3,0,4,1,8,4,1,9,2,5,6,5,8,5,0,8,1,8,3,4,3,0,7,2,8,7,3,5,7,8,5,1,8,0,7,2,0,0,2,2,6,6,1,0,6,1,0,9,7,6,4,0,9,3,3,0,4,2,7,6,8,2,9,3,9,0,3,8,8,3,0,2,3,2,1,8,8,6,6,1,1,4,5,4,0,7,3,1,5,1,9,1,8,3,9,0,6,1,8,4,3,7,2,2,3,4,7,6,3,8,6,5,2,2,3,5,8,6,2,1,0,2,3,7,0,9,6,1,4,8,9,2,4,7,5,9,9,2,5,4,9,9,1,3,4,7,0,3,7,7,1,5,0,5,4,4,9,7,8,2,4,5,5,8,7,6,3,6,6,0,2,3,8,9,8,2,5,9,6,6,7,3,4,6,7,2,4,8,8,1,3,1,3,2,8,6,1,7,2,0,4,2,7,8,9,8,9,2,7,9,0,4,4,9,4,7,4,3,8,1,4,0,4,3,5,9,7,2,1,8,8,7,4,0,5,5,4,1,0,7,8,4,3,4,3,5,2,5,8,6,3,5,3,5,0,4,7,6,9,3,4,9,6,3,6,9,3,5,3,3,8,8,1,0,2,6,4,0,0,1,1,3,6,2,5,4,2,9,0,5,2,7,1,2,1,6,5,5,5,7,1,5,4,2,6,8,5,5,1,5,5,7,9,2,1,8,3,4,7,2,7,4,3,5,7,4,4,2,9,3,6,8,8,1,8,0,2,4,4,9,9,0,6,8,6,0,2,9,3,0,9,9,1,7,0,7,4,2,1,0,1,5,8,4,5,5,9,3,7,8,5,1,7,8,4,7,0,8,4,0,3,9,9,1,2,2,2,4,2,5,8,0,4,3,9,2,1,7,2,8,0,6,8,8,3,6,3,1,9,6,2,7,2,5,9,5,4,9,5,4,2,6,1,9,9,2,1,0,3,7,4,1,4,4,2,2,6,9,9,9,9,9,9,9,6,7,4,5,9,5,6,0,9,9,9,0,2,1,1,9,4,6,3,4,6,5,6,3,2,1,9,2,6,3,7,1,9][int(t/4096)%1000], 2*t*2**(w(d)/12)
tau = 6.283185307179586, c = t >> 13, ((((c & 5) + (c || 2)) % 48)*t % 256) * (2 + cos(tau*t / 2**11))/3
( t*((t>>9) & 1+(2*(t>>14))) )*(2^t)
a = function(n) { if (n > 2 && n % 2 == 0) return 2; for (x = 3; x <= sqrt(n); x++) { if (n % x == 0) return x; } return 1; }, u = (t >> 13) + 1, u * (t / 2) % 128 + a(u) * (t / 2) % 128
(t & (t >> 12)) * 255 / (t >> 12)
//This has a new sound. o = function(x) { if (x == 0) return 0; if (x % 2 == 0) return o(x / 2); else return o((x - 1) / 2) + 1 }, p = function(x) { if (x == 0) return 0; if (x % 2 == 0) return x / 2 + 2 * p(x / 2); else return p(x - 1) + o(x) }, p(t)
s = function(n) { if (n == 0) return t; return s(n - 1) + (t >> n) }, s(t >> 11)
t * 2 ** ((t >> 10) / 12)
u = t >> 12, (256/u)*((t % u) ** 2)
p = function(b, e, m) { if (e == 0) return 1; return b * p(b, e - 1, m) % m; }, x = 37, (256/x)*p(t >> 3, ((t >> 14) + 1) % 36, x)
t & (t * (((t >> 11) ^ 13) & 23))
128 + 128*sin(int(t/((t >> 14) + 1)))
(128 + 128*sin(int(t/((t >> 13) + 1)))) * ((t >> 12) % 2) + (128 + 128*sin(t/((t >> 13) + 1))) * (((t >> 12) + 1) % 2)
u = (t >> 10), (((u >> 5) & 3) * t*(2 + (u/2 & 2) + (u/2 & 1)*(1 - (u/2 & 2)))) % 128 + t*(4 + (u & 2) + (u & 1)*(1 - (u/2 & 2))) % 128