G.f.: Product_{k >= 0} ((1 + x^(2*k+1)) / (1 - x^(2*k+1)))^k.

Terms

a(0) =1a(1) =0a(2) =0a(3) =2a(4) =0a(5) =4a(6) =2a(7) =6a(8) =8a(9) =10a(10) =20a(11) =18a(12) =42a(13) =40a(14) =78a(15) =92a(16) =140a(17) =192a(18) =258a(19) =382a(20) =480a(21) =728a(22) =902a(23) =1334a(24) =1698a(25) =2404a(26) =3148a(27) =4292a(28) =5742a(29) =7608