A024980 a(n) = position of n^3 + (n+1)^3 + (n+2)^3 in A024975.

1, 4, 10, 23, 44, 74, 118, 166, 241, 328, 436, 563, 718, 894, 1095, 1327, 1585, 1891, 2199, 2592, 2987, 3417, 3884, 4406, 4968, 5563, 6234, 6931, 7707, 8519, 9408, 10360, 11315, 12392, 13465, 14665, 15908, 17236, 18616, 20057, 21570, 23153, 24824, 26546