Number of partitions of n into distinct parts, none being 4.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =1a(5) =2a(6) =3a(7) =3a(8) =5a(9) =6a(10) =7a(11) =9a(12) =10a(13) =12a(14) =15a(15) =18a(16) =22a(17) =26a(18) =31a(19) =36a(20) =42a(21) =50a(22) =58a(23) =68a(24) =80a(25) =92a(26) =107a(27) =124a(28) =142a(29) =164