Number of partitions of n such that (greatest part) - (least part) = number of parts.

Terms

a(0) =0a(1) =0a(2) =0a(3) =1a(4) =0a(5) =2a(6) =1a(7) =3a(8) =3a(9) =5a(10) =4a(11) =10a(12) =8a(13) =13a(14) =15a(15) =22a(16) =22a(17) =34a(18) =36a(19) =51a(20) =58a(21) =75a(22) =85a(23) =116a(24) =130a(25) =165a(26) =194a(27) =244a(28) =281a(29) =355