Number of partitions of 2n that contain odd parts.

Terms

a(0) =0a(1) =1a(2) =3a(3) =8a(4) =17a(5) =35a(6) =66a(7) =120a(8) =209a(9) =355a(10) =585a(11) =946a(12) =1498a(13) =2335a(14) =3583a(15) =5428a(16) =8118a(17) =12013a(18) =17592a(19) =25525a(20) =36711a(21) =52382a(22) =74173a(23) =104303a(24) =145698a(25) =202268a(26) =279153a(27) =383145a(28) =523105a(29) =710655