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

Terms

a(0) =0a(1) =1a(2) =1a(3) =2a(4) =3a(5) =4a(6) =6a(7) =10a(8) =12a(9) =18a(10) =24a(11) =33a(12) =44a(13) =60a(14) =76a(15) =102a(16) =132a(17) =172a(18) =218a(19) =282a(20) =355a(21) =453a(22) =567a(23) =714a(24) =889a(25) =1112a(26) =1372a(27) =1701a(28) =2091a(29) =2573