Number of partitions of n into parts 6k or 6k+3.

Terms

a(0) =1a(1) =0a(2) =0a(3) =1a(4) =0a(5) =0a(6) =2a(7) =0a(8) =0a(9) =3a(10) =0a(11) =0a(12) =5a(13) =0a(14) =0a(15) =7a(16) =0a(17) =0a(18) =11a(19) =0a(20) =0a(21) =15a(22) =0a(23) =0a(24) =22a(25) =0a(26) =0a(27) =30a(28) =0a(29) =0