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

Terms

a(0) =1a(1) =3a(2) =14a(3) =51a(4) =195a(5) =663a(6) =2345a(7) =7707a(8) =25744a(9) =82980a(10) =267812a(11) =846150a(12) =2676163a(13) =8337189a(14) =25947281a(15) =80053128a(16) =246468551a(17) =754366239a(18) =2305139065a(19) =7014997404a(20) =21317567297a(21) =64606020012a(22) =195557995054a(23) =590855420007