Number of partitions of n having exactly 1 part that appears exactly once.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =4a(6) =8a(7) =8a(8) =12a(9) =16a(10) =23a(11) =24a(12) =40a(13) =45a(14) =59a(15) =72a(16) =99a(17) =108a(18) =153a(19) =171a(20) =224a(21) =263a(22) =341a(23) =377a(24) =504a(25) =567a(26) =711a(27) =821a(28) =1035a(29) =1153