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 A225260 #6 Jul 23 2025 05:23:09 %S A225260 4,20,63,141,284,478,780,1156,1667,2298,3111,4012,5213,6520,8063,9839, %T A225260 11943,14184,16882,19667,22953,26467,30431,34509,39359,44396,49878, %U A225260 55801,62298,68881,76518,84233,92751,101639,111167,121017,132078,143185,155102 %N A225260 Number of distinct values of the sum of 3 products of three 0..n integers. %C A225260 Row 3 of A225258 %H A225260 R. H. Hardin, <a href="/A225260/b225260.txt">Table of n, a(n) for n = 1..139</a> %K A225260 nonn %O A225260 1,1 %A A225260 _R. H. Hardin_ May 04 2013