Partitions into parts with frequency less than or equal to their place in the list of summands.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =2a(5) =4a(6) =4a(7) =6a(8) =8a(9) =11a(10) =12a(11) =18a(12) =22a(13) =28a(14) =34a(15) =44a(16) =54a(17) =69a(18) =82a(19) =102a(20) =125a(21) =154a(22) =185a(23) =226a(24) =271a(25) =327a(26) =393a(27) =474a(28) =562a(29) =673