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 A352481 #18 Feb 16 2025 08:34:03 %S A352481 42,84,148,237,363,534,766,1060,1436,1911,2484,3184,4014 %N A352481 Number of positive integers that are not the sum of distinct centered n-gonal numbers. %H A352481 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/CenteredPolygonalNumber.html">Centered Polygonal Number</a> %Y A352481 Cf. A025524, A101321, A352349, A352585. %K A352481 nonn,more %O A352481 3,1 %A A352481 _Ilya Gutkovskiy_, Mar 21 2022