Expansion of (1 + x)^12 / (1 - x)^13.

Terms

a(0) =1a(1) =25a(2) =313a(3) =2625a(4) =16641a(5) =85305a(6) =369305a(7) =1392065a(8) =4673345a(9) =14218905a(10) =39753273a(11) =103274625a(12) =251595969a(13) =579168825a(14) =1267854873a(15) =2653649025a(16) =5334940545a(17) =10343052825a(18) =19403906105a(19) =35330137025a(20) =62596382081a(21) =108167252025a(22) =182668423833a(23) =302016962625a(24) =489658242241