Number of partitions of n into distinct parts, the least being 3.

Terms

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