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 A295190 #10 Feb 16 2025 08:33:52 %S A295190 1,1,1,5,97,6739,1611097,1295101469,3449859538455,30155591559236245, %T A295190 859063676925680110319,79361177641450830904290293 %N A295190 Chromatic invariant of the n-triangular grid graph. %H A295190 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/ChromaticInvariant.html">Chromatic Invariant</a> %H A295190 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/TriangularGridGraph.html">Triangular Grid Graph</a> %Y A295190 Cf. A182283, A182797, A193283. %K A295190 nonn,more %O A295190 0,4 %A A295190 _Eric W. Weisstein_, Nov 16 2017 %E A295190 a(8)-a(11) from _Andrew Howroyd_, Apr 23 2018