a(n) = sum of n consecutive cubes after n^3.

Terms

a(0) =8a(1) =91a(2) =405a(3) =1196a(4) =2800a(5) =5643a(6) =10241a(7) =17200a(8) =27216a(9) =41075a(10) =59653a(11) =83916a(12) =114920a(13) =153811a(14) =201825a(15) =260288a(16) =330616a(17) =414315a(18) =512981a(19) =628300a(20) =762048a(21) =916091a(22) =1092385a(23) =1292976a(24) =1520000a(25) =1775683a(26) =2062341a(27) =2382380a(28) =2738296a(29) =3132675