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 A295189 #16 Jun 16 2025 15:29:12 %S A295189 1,1,27,20346417,505719202397835049370570187 %N A295189 Chromatic invariant of the n-Sierpinski gasket graph. %H A295189 Andrew Howroyd, <a href="/A295189/b295189.txt">Table of n, a(n) for n = 1..6</a> %H A295189 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/ChromaticInvariant.html">Chromatic Invariant</a>. %H A295189 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/SierpinskiGasketGraph.html">Sierpinski Gasket Graph</a>. %Y A295189 Cf. A193277. %K A295189 nonn %O A295189 1,3 %A A295189 _Eric W. Weisstein_, Nov 16 2017 %E A295189 a(5) onwards from _Andrew Howroyd_, Aug 08 2024