a(n) = n^5-n^4-n^3-n^2-n-1.

Terms

a(0) =-1a(1) =-4a(2) =1a(3) =122a(4) =683a(5) =2344a(6) =6221a(7) =14006a(8) =28087a(9) =51668a(10) =88889a(11) =144946a(12) =226211a(13) =340352a(14) =496453a(15) =705134a(16) =978671a(17) =1331116a(18) =1778417a(19) =2338538a(20) =3031579a(21) =3879896a(22) =4908221a(23) =6143782a(24) =7616423a(25) =9358724a(26) =11406121a(27) =13797026a(28) =16572947a(29) =19778608