Number of partitions p of n such that max(p) - 3*min(p) is a part of p.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =1a(6) =2a(7) =4a(8) =6a(9) =10a(10) =13a(11) =20a(12) =27a(13) =39a(14) =50a(15) =70a(16) =87a(17) =120a(18) =147a(19) =198a(20) =240a(21) =315a(22) =381a(23) =491a(24) =594a(25) =752a(26) =900a(27) =1130a(28) =1348a(29) =1676