This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A102805 #5 Oct 02 2013 15:57:58 %S A102805 126,392,402,418,439,457,464,502,538,577,587,602,612,638,657,722,793, %T A102805 812,822,838,863,1007,1062,1198,1408,1423 %N A102805 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) = 6. %C A102805 It appears that there are just two numbers n for which f(n) = 7, namely 412 and 622 and none with f(n) > 7. %Y A102805 Cf. A000292, A104246, A102795, etc. %K A102805 nonn %O A102805 1,1 %A A102805 _Jud McCranie_, Feb 26 2005