Number of partitions of n into distinct parts, none being 3.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =2a(6) =3a(7) =4a(8) =4a(9) =5a(10) =6a(11) =8a(12) =10a(13) =12a(14) =14a(15) =17a(16) =20a(17) =24a(18) =29a(19) =34a(20) =40a(21) =47a(22) =55a(23) =64a(24) =75a(25) =87a(26) =101a(27) =117a(28) =135a(29) =155