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 A251532 #50 Aug 08 2025 14:20:13 %S A251532 1,3,6,7,7,9,15,18,21,21,27,31,36,42,42,47,54,62,70,70,77,85,95,105, %T A251532 109,117,126,136,147,155,166,176,187,199,210,222,235,247,260,274,287, %U A251532 301,316,330,345,361,376,392,409,425,442,460,477,495,514,532,551,571 %N A251532 Independence number of the n-triangular honeycomb obtuse knight graph. %H A251532 Andy Huchala, <a href="/A251532/b251532.txt">Table of n, a(n) for n = 1..255</a> %H A251532 Andy Huchala, <a href="/A251532/a251532.py.txt">Python program</a>. %H A251532 Stan Wagon, <a href="http://www.jstor.org/stable/10.4169/college.math.j.45.4.278">Graph Theory Problems from Hexagonal and Traditional Chess</a>, The College Mathematics Journal, Vol. 45, No. 4, September 2014, pp. 278-287. %H A251532 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/IndependenceNumber.html">Independence Number</a>. %K A251532 nonn %O A251532 1,2 %A A251532 _N. J. A. Sloane_, Dec 04 2014 %E A251532 a(20)-a(24) from _Eric W. Weisstein_, May 21-25 2017 %E A251532 a(25)-a(58) from _Andy Huchala_, Mar 31 2024