A102799 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.

1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 24, 25, 28, 30, 31, 34, 35, 36, 37, 39, 40, 41, 43, 44, 45, 46, 49, 50, 55, 56, 57, 58, 59, 60, 61, 64, 65, 66, 67, 70, 71, 74, 75, 76, 77, 80, 84, 85, 86, 88, 89, 90, 91, 92, 94, 95, 96, 98, 101, 104, 105