a(n) = n^5-n^4-n^3-n^2-n.

Terms

a(0) =0a(1) =-3a(2) =2a(3) =123a(4) =684a(5) =2345a(6) =6222a(7) =14007a(8) =28088a(9) =51669a(10) =88890a(11) =144947a(12) =226212a(13) =340353a(14) =496454a(15) =705135a(16) =978672a(17) =1331117a(18) =1778418a(19) =2338539a(20) =3031580a(21) =3879897a(22) =4908222a(23) =6143783a(24) =7616424a(25) =9358725a(26) =11406122a(27) =13797027a(28) =16572948a(29) =19778609