Number of partitions of n into at most 4 parts.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =5a(5) =6a(6) =9a(7) =11a(8) =15a(9) =18a(10) =23a(11) =27a(12) =34a(13) =39a(14) =47a(15) =54a(16) =64a(17) =72a(18) =84a(19) =94a(20) =108a(21) =120a(22) =136a(23) =150a(24) =169a(25) =185a(26) =206a(27) =225a(28) =249a(29) =270