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

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =5a(5) =6a(6) =10a(7) =14a(8) =19a(9) =26a(10) =37a(11) =49a(12) =66a(13) =87a(14) =115a(15) =150a(16) =193a(17) =244a(18) =309a(19) =387a(20) =479a(21) =585a(22) =714a(23) =860a(24) =1032a(25) =1226a(26) =1454a(27) =1697a(28) =1991a(29) =2304