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

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =11a(6) =21a(7) =39a(8) =73a(9) =137a(10) =257a(11) =482a(12) =903a(13) =1693a(14) =3173a(15) =5948a(16) =11149a(17) =20899a(18) =39174a(19) =73430a(20) =137641a(21) =258002a(22) =483614a(23) =906513a(24) =1699219a(25) =3185111a(26) =5970352a(27) =11191163a(28) =20977346a(29) =39321116