Number of separable partitions of n in which the number of distinct (repeatable) parts is 4.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =1a(10) =2a(11) =5a(12) =10a(13) =19a(14) =28a(15) =48a(16) =69a(17) =102a(18) =138a(19) =190a(20) =254a(21) =331a(22) =420a(23) =534a(24) =662a(25) =818a(26) =1003a(27) =1192a(28) =1438a(29) =1700