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 A289903 #11 Feb 16 2025 08:33:49 %S A289903 1,3,3,3,3,6,9,9,9,10,15,18,18,18,21,28,30,30,34,36,45,45,48,51,55,63, %T A289903 63,70,75,78,84,90,96,100,105,111,118,123,132,136,144,150,157,165,171, %U A289903 178,186,195,202,210,219,226,234,243,253,261,270,280,288,297,307 %N A289903 Domination number of the n-triangular honeycomb acute knight graph. %H A289903 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/DominationNumber.html">Domination Number</a> %K A289903 nonn,more %O A289903 1,2 %A A289903 _Eric W. Weisstein_, Jul 14 2017 %E A289903 a(31) and beyond from _Eric W. Weisstein_, Sep 18 2021