Expansion of (1+3x^2)/(1-x-9x^5).

Terms

a(0) =1a(1) =1a(2) =4a(3) =4a(4) =4a(5) =13a(6) =22a(7) =58a(8) =94a(9) =130a(10) =247a(11) =445a(12) =967a(13) =1813a(14) =2983a(15) =5206a(16) =9211a(17) =17914a(18) =34231a(19) =61078a(20) =107932a(21) =190831a(22) =352057a(23) =660136a(24) =1209838a(25) =2181226a(26) =3898705a(27) =7067218a(28) =13008442a(29) =23896984