Number of partitions of n that do not contain 4 as a part.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =4a(5) =6a(6) =9a(7) =12a(8) =17a(9) =23a(10) =31a(11) =41a(12) =55a(13) =71a(14) =93a(15) =120a(16) =154a(17) =196a(18) =250a(19) =314a(20) =396a(21) =495a(22) =617a(23) =765a(24) =948a(25) =1166a(26) =1434a(27) =1755a(28) =2143a(29) =2607