a(n) = 2(5n^2 + 5n + 1)^3.

Terms

a(0) =2a(1) =2662a(2) =59582a(3) =453962a(4) =2060602a(5) =6885902a(6) =18787862a(7) =44376082a(8) =94091762a(9) =183467702a(10) =334568302a(11) =577609562a(12) =952759082a(13) =1512116062a(14) =2321871302a(15) =3464647202a(16) =5042017762a(17) =7177208582a(18) =10017976862a(19) =13739671402a(20) =18548472602