Expansion of 1 / (1 - x - x^2 + x^3 - x^5 + x^15 - x^17 - x^18 + x^19 + x^20).

Terms

a(0) =1a(1) =1a(2) =2a(3) =2a(4) =3a(5) =4a(6) =6a(7) =9a(8) =13a(9) =19a(10) =27a(11) =39a(12) =56a(13) =81a(14) =117a(15) =168a(16) =242a(17) =348a(18) =503a(19) =725a(20) =1046a(21) =1506a(22) =2169a(23) =3124a(24) =4501a(25) =6487a(26) =9348a(27) =13471a(28) =19409a(29) =27965