A102803 Let f(n) be the minimal number of distinct nonzero tetrahedral numbers that add to n (or -1 if n is not a sum of distinct tetrahedral numbers); sequence gives numbers n for which f(n) = 4.

50, 69, 71, 81, 87, 90, 96, 99, 102, 109, 112, 115, 118, 133, 135, 143, 145, 149, 151, 154, 161, 164, 181, 187, 190, 197, 199, 206, 209, 212, 215, 218, 226, 228, 232, 235, 242, 243, 245, 251, 254, 257, 261, 263, 264, 266, 270, 273, 279, 281

Offset

1,1

Links

Table of n, a(n) for n=1..50.

Crossrefs

Cf. A000292, A104246, A102795, etc.

Sequence in context: A092541 A335233 A180103 * A224559 A272607 A224552

Adjacent sequences: A102800 A102801 A102802 * A102804 A102805 A102806

Keyword

nonn

Author

Jud McCranie, Feb 26 2005

Status

approved