Expansion of Product_{k>=1} 1/(1 - (1 + x + x^2) * x^k).

Terms

a(0) =1a(1) =1a(2) =3a(3) =7a(4) =15a(5) =31a(6) =64a(7) =128a(8) =254a(9) =496a(10) =961a(11) =1844a(12) =3516a(13) =6662a(14) =12564a(15) =23593a(16) =44153a(17) =82385a(18) =153351a(19) =284857a(20) =528235a(21) =978148a(22) =1809120a(23) =3342722a(24) =6171318a(25) =11385733a(26) =20994298a(27) =38693809a(28) =71288111a(29) =131297855