On Sun 17 Dec, Adrian Hey wrote: > You can use a variation of this algorithm with lazy lists.. > > primes = 2:(get_primes [3,5..]) > get_primes (x:xs) = x:(get_primes (strike (x+x) (x*x) xs)) ^^^ Whoops,_____________________________________________| 32 bit Ints may cause trouble here :-) Regards -- Adrian Hey