Number of partitions of n in which each part occurs an odd number (or zero) times.

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =2a(5) =5a(6) =6a(7) =9a(8) =9a(9) =16a(10) =20a(11) =25a(12) =32a(13) =40a(14) =54a(15) =69a(16) =84a(17) =101a(18) =136a(19) =156a(20) =202a(21) =244a(22) =306a(23) =357a(24) =448a(25) =527a(26) =652a(27) =773a(28) =944a(29) =1103