A074704 a(n) = floor(n^(3/2)) - n*floor(n^(1/2)).

0, 0, 2, 0, 1, 2, 4, 6, 0, 1, 3, 5, 7, 10, 13, 0, 2, 4, 6, 9, 12, 15, 18, 21, 0, 2, 5, 8, 11, 14, 17, 21, 24, 28, 32, 0, 3, 6, 9, 12, 16, 20, 23, 27, 31, 35, 40, 44, 0, 3, 7, 10, 14, 18, 22, 27, 31, 35, 40, 44, 49, 54, 59, 0, 4, 8, 12, 16, 21, 25, 30, 34, 39, 44, 49, 54, 59, 64, 70