A025217 - OEIS

A025217

[ Sum (s(j) - s(i))^3 ], 1 <= i < j <= n, where s(k) = 1 + 1/2 + ... + 1/k.

0, 0, 2, 4, 9, 15, 22, 33, 45, 60, 78, 98, 121, 147, 177, 209, 245, 284, 326, 372, 422, 475, 531, 592, 656, 723, 795, 871, 950, 1034, 1121, 1213, 1308, 1408, 1512, 1620, 1732, 1848, 1969, 2093, 2223, 2356, 2494, 2636, 2782, 2933, 3089, 3249, 3413, 3582, 3755, 3932, 4115, 4302