Sum of all the parts in the partitions of n into 4 parts.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =4a(5) =5a(6) =12a(7) =21a(8) =40a(9) =54a(10) =90a(11) =121a(12) =180a(13) =234a(14) =322a(15) =405a(16) =544a(17) =663a(18) =846a(19) =1026a(20) =1280a(21) =1512a(22) =1848a(23) =2162a(24) =2592a(25) =3000a(26) =3536a(27) =4050a(28) =4732a(29) =5365