Number of partitions of n into parts 3k+1 and 3k+2 with at least one part of each type.

Terms

a(0) =0a(1) =0a(2) =1a(3) =1a(4) =2a(5) =4a(6) =5a(7) =7a(8) =11a(9) =14a(10) =19a(11) =26a(12) =33a(13) =43a(14) =55a(15) =70a(16) =88a(17) =111a(18) =137a(19) =170a(20) =208a(21) =256a(22) =311a(23) =378a(24) =456a(25) =551a(26) =658a(27) =790a(28) =940a(29) =1119