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

Terms

a(0) =1a(1) =1a(2) =2a(3) =5a(4) =12a(5) =28a(6) =66a(7) =156a(8) =367a(9) =863a(10) =2031a(11) =4779a(12) =11244a(13) =26456a(14) =62248a(15) =146462a(16) =344608a(17) =810822a(18) =1907769a(19) =4488757a(20) =10561519a(21) =24850017a(22) =58469179a(23) =137571128a(24) =323688747a(25) =761601701a(26) =1791959579a(27) =4216270956a(28) =9920391613a(29) =23341519267