G.f.: Sum_{k>=0} x^k/(1-k*x)^(k+1). - Vladeta Jovovic, Oct 25 2003
Here you could(/should) use:
pp=: +//.@(*/) +/ 3 :'(((0,pp)^:y~1)&p.%(pp^:(y)~(1,- y))&p.) t. i.12'&> i.12 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
