Number of partitions p of n such that min(p) < (number of parts of p) <= max(p).

Terms

a(0) =0a(1) =0a(2) =1a(3) =1a(4) =2a(5) =3a(6) =6a(7) =8a(8) =12a(9) =17a(10) =24a(11) =33a(12) =46a(13) =61a(14) =82a(15) =108a(16) =142a(17) =184a(18) =239a(19) =305a(20) =391a(21) =495a(22) =626a(23) =786a(24) =985a(25) =1226a(26) =1524a(27) =1884a(28) =2323a(29) =2853