a(n) = n^3 * (n^2 - n + 1).

Terms

a(0) =0a(1) =1a(2) =24a(3) =189a(4) =832a(5) =2625a(6) =6696a(7) =14749a(8) =29184a(9) =53217a(10) =91000a(11) =147741a(12) =229824a(13) =344929a(14) =502152a(15) =712125a(16) =987136a(17) =1341249a(18) =1790424a(19) =2352637a(20) =3048000a(21) =3898881a(22) =4930024a(23) =6168669a(24) =7644672a(25) =9390625a(26) =11441976a(27) =13837149a(28) =16617664a(29) =19828257