Number of partitions of n into parts of 4 kinds.

Terms

a(0) =1a(1) =4a(2) =14a(3) =40a(4) =105a(5) =252a(6) =574a(7) =1240a(8) =2580a(9) =5180a(10) =10108a(11) =19208a(12) =35693a(13) =64960a(14) =116090a(15) =203984a(16) =353017a(17) =602348a(18) =1014580a(19) =1688400a(20) =2778517a(21) =4524760a(22) =7296752a(23) =11658920a(24) =18468245a(25) =29015700a(26) =45235414a(27) =70005376a(28) =107585845a(29) =164245380