a(n) = n(p(n)-d(n)): sum of all of parts of all partitions of n with at least one distinct part.

Terms

a(0) =0a(1) =0a(2) =3a(3) =8a(4) =25a(5) =42a(6) =91a(7) =144a(8) =243a(9) =380a(10) =594a(11) =852a(12) =1287a(13) =1834a(14) =2580a(15) =3616a(16) =5015a(17) =6822a(18) =9272a(19) =12420a(20) =16548a(21) =21956a(22) =28819a(23) =37608a(24) =48875a(25) =63232a(26) =81162a(27) =103936a(28) =132327a(29) =167880