Number of partitions of 2*n into at most 4 parts.

Terms

a(0) =1a(1) =2a(2) =5a(3) =9a(4) =15a(5) =23a(6) =34a(7) =47a(8) =64a(9) =84a(10) =108a(11) =136a(12) =169a(13) =206a(14) =249a(15) =297a(16) =351a(17) =411a(18) =478a(19) =551a(20) =632a(21) =720a(22) =816a(23) =920a(24) =1033a(25) =1154a(26) =1285a(27) =1425a(28) =1575a(29) =1735