A025197 a(n) = [ Sum{(sqrt(j)-sqrt(i))^3} ], 1 <= i < j <= n.

0, 0, 1, 4, 8, 16, 27, 43, 64, 92, 128, 172, 227, 294, 373, 467, 576, 703, 849, 1015, 1203, 1414, 1652, 1916, 2209, 2533, 2890, 3282, 3710, 4177, 4684, 5234, 5829, 6470, 7161, 7903, 8698, 9549, 10458, 11427, 12458, 13555, 14719, 15933, 17259, 18640, 20098, 21636, 23257