Number of partitions of n into parts 3k and 3k+1 with at least one part of each type.

Terms

a(0) =0a(1) =0a(2) =0a(3) =1a(4) =1a(5) =1a(6) =4a(7) =4a(8) =4a(9) =10a(10) =11a(11) =11a(12) =22a(13) =25a(14) =26a(15) =44a(16) =51a(17) =54a(18) =84a(19) =98a(20) =105a(21) =152a(22) =178a(23) =193a(24) =266a(25) =312a(26) =341a(27) =452a(28) =528a(29) =581