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 A102800 #6 Jun 05 2025 06:18:20 %S A102800 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,18,19,20,21,22,23,24,25,26,28, %T A102800 29,30,31,32,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,53, %U A102800 54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,74 %N A102800 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) <= 4. %Y A102800 Cf. A000292, A000797, A104246, A102795, etc. %K A102800 nonn %O A102800 1,2 %A A102800 _Jud McCranie_, Feb 26 2005