Expansion of (1/(1 - x)) * Sum_{k>=0} x^(2*k) / Product_{j=1..2*k} (1 - x^j).

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =9a(6) =15a(7) =22a(8) =34a(9) =48a(10) =70a(11) =97a(12) =137a(13) =186a(14) =255a(15) =341a(16) =459a(17) =605a(18) =800a(19) =1042a(20) =1359a(21) =1751a(22) =2256a(23) =2879a(24) =3672a(25) =4645a(26) =5869a(27) =7367a(28) =9234a(29) =11508