Number of partitions of n into distinct parts, the least being 4.

Terms

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