Number of periodic partitions of n: each part occurs more than once and the same number of times.

Terms

a(0) =0a(1) =1a(2) =1a(3) =2a(4) =1a(5) =4a(6) =1a(7) =4a(8) =3a(9) =5a(10) =1a(11) =10a(12) =1a(13) =7a(14) =6a(15) =10a(16) =1a(17) =16a(18) =1a(19) =17a(20) =8a(21) =14a(22) =1a(23) =31a(24) =4a(25) =20a(26) =11a(27) =31a(28) =1a(29) =48