A(x) satisfies A005408(x) = A(x)/A(x^2), A005408 = odd numbers.

Terms

a(0) =1a(1) =3a(2) =8a(3) =16a(4) =32a(5) =56a(6) =96a(7) =152a(8) =240a(9) =360a(10) =536a(11) =768a(12) =1096a(13) =1520a(14) =2096a(15) =2824a(16) =3792a(17) =5000a(18) =6568a(19) =8496a(20) =10960a(21) =13960a(22) =17728a(23) =22264a(24) =27896a(25) =34624a(26) =42872a(27) =52640a(28) =64504a(29) =78464