Number of partitions of n such that (number of distinct parts) = number of 1s.

Terms

a(0) =1a(1) =1a(2) =0a(3) =0a(4) =1a(5) =1a(6) =2a(7) =1a(8) =4a(9) =2a(10) =6a(11) =6a(12) =8a(13) =10a(14) =16a(15) =15a(16) =22a(17) =32a(18) =31a(19) =47a(20) =54a(21) =72a(22) =81a(23) =111a(24) =123a(25) =166a(26) =189a(27) =244a(28) =274a(29) =366