random

hey /prog/.

is there a random number generator algorithm/library that supports something like this: use this seed, give me next nth random number? obviously it shouldn't iterate n times. I don't care if it is not that random.

there is probably something very simple for this but I can't get my head around it.

There's an LCG variant with that property: https://en.wikipedia.org/wiki/Lehmer_RNG

I haven't checked my math, but I think you want: X_k+i = g⁽ⁱ⁺¹⁾·X_k mod n