Number of partitions where the number of 1's and 2's are equal.

Terms

a(0) =1a(1) =0a(2) =0a(3) =2a(4) =1a(5) =1a(6) =4a(7) =3a(8) =4a(9) =8a(10) =8a(11) =10a(12) =17a(13) =18a(14) =23a(15) =34a(16) =39a(17) =48a(18) =67a(19) =78a(20) =97a(21) =127a(22) =151a(23) =185a(24) =237a(25) =281a(26) =343a(27) =428a(28) =511a(29) =616