A013621 - OEIS

%I #5 Mar 30 2012 16:45:53

%S 1,2,5,4,20,25,8,60,150,125,16,160,600,1000,625,32,400,2000,5000,6250,

%T 3125,64,960,6000,20000,37500,37500,15625,128,2240,16800,70000,175000,

%U 262500,218750,78125,256,5120,44800,224000,700000,1400000

%N Triangle of coefficients in expansion of (2+5x)^n.

%F G.f.: 1 / [1 - x(2+5y)].

%K tabl,nonn,easy

%O 0,2

%A _N. J. A. Sloane_.