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 A225257 #9 Sep 07 2023 07:15:49 %S A225257 4,11,23,39,63,83,117,151,196,247,304,347,414,487,566,651,742,827,929, %T A225257 1019,1132,1251,1356,1463,1598,1739,1886,2039,2198,2363,2534,2711, %U A225257 2894,3059,3219,3418,3623,3834,4051,4239,4467,4701,4941,5187,5439,5697,5961 %N A225257 Minimum value unattainable as the sum of 3 attained values of a*b with a,b 0..n integers. %C A225257 Related to A225252. %H A225257 R. H. Hardin, <a href="/A225257/b225257.txt">Table of n, a(n) for n = 1..1000</a> %Y A225257 Cf. A225252, A225254. %K A225257 nonn %O A225257 1,1 %A A225257 _R. H. Hardin_, May 04 2013