Expansion of (1+x)^4/(1-x)^7.

Terms

a(0) =1a(1) =11a(2) =62a(3) =242a(4) =743a(5) =1925a(6) =4396a(7) =9108a(8) =17469a(9) =31471a(10) =53834a(11) =88166a(12) =139139a(13) =212681a(14) =316184a(15) =458728a(16) =651321a(17) =907155a(18) =1241878a(19) =1673882a(20) =2224607a(21) =2918861a(22) =3785156a(23) =4856060a(24) =6168565a(25) =7764471a(26) =9690786a(27) =12000142a(28) =14751227a(29) =18009233