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%I #4 Oct 02 2013 15:57:58
%S 50,69,71,81,87,90,96,99,102,109,112,115,118,133,135,143,145,149,151,
%T 154,161,164,181,187,190,197,199,206,209,212,215,218,226,228,232,235,
%U 242,243,245,251,254,257,261,263,264,266,270,273,279,281
%N 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.
%Y Cf. A000292, A104246, A102795, etc.
%K nonn
%O 1,1
%A _Jud McCranie_, Feb 26 2005