%I #5 Mar 30 2012 16:45:53
%S 1,5,7,25,70,49,125,525,735,343,625,3500,7350,6860,2401,3125,21875,
%T 61250,85750,60025,16807,15625,131250,459375,857500,900375,504210,
%U 117649,78125,765625,3215625,7503125,10504375,8823675,4117715
%N Triangle of coefficients in expansion of (5+7x)^n.
%F G.f.: 1 / [1 - x(5+7y)].
%K tabl,nonn,easy
%O 0,2
%A _N. J. A. Sloane_.