a(n) = n^5 + n^3 - n^2.

Terms

a(0) =0a(1) =1a(2) =36a(3) =261a(4) =1072a(5) =3225a(6) =7956a(7) =17101a(8) =33216a(9) =59697a(10) =100900a(11) =162261a(12) =250416a(13) =373321a(14) =540372a(15) =762525a(16) =1052416a(17) =1424481a(18) =1895076a(19) =2482597a(20) =3207600a(21) =4092921a(22) =5163796a(23) =6447981a(24) =7975872a(25) =9780625a(26) =11898276a(27) =14367861a(28) =17231536a(29) =20534697