<kmc> addquote <zzo38> Is axiom of choice applicable to work of such a game though? Maybe it is, but I don\'t know. I also don\'t know, what game.

import Data.List(inits);main = let p = 1 : zipWith (+) (map (*4) p) (map (sum . zipWith (*) p . reverse) (inits p)) in print $ p !! 1000