A102796 Let f(n) = A104246(n) be the minimal number of nonzero tetrahedral numbers that add to n; sequence gives numbers n for which f(n) = 3.

3, 6, 9, 12, 15, 18, 22, 25, 28, 31, 34, 37, 41, 43, 44, 46, 49, 50, 58, 59, 61, 64, 65, 67, 71, 74, 75, 77, 80, 86, 89, 90, 92, 95, 96, 98, 101, 105, 108, 111, 113, 114, 116, 122, 123, 125, 126, 128, 129, 131, 132, 134, 139, 141, 144, 147, 150, 154, 156