Expansion of (1+4x^2)/(1-x-16x^5).

Terms

a(0) =1a(1) =1a(2) =5a(3) =5a(4) =5a(5) =21a(6) =37a(7) =117a(8) =197a(9) =277a(10) =613a(11) =1205a(12) =3077a(13) =6229a(14) =10661a(15) =20469a(16) =39749a(17) =88981a(18) =188645a(19) =359221a(20) =686725a(21) =1322709a(22) =2746405a(23) =5764725a(24) =11512261a(25) =22499861a(26) =43663205a(27) =87605685a(28) =179841285a(29) =364037461