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 A029866 #43 Feb 16 2025 08:32:35 %S A029866 1,2,2,2,4,7,12,16 %N A029866 Size of minimal binary covering code of length n and covering radius 2. %C A029866 Also the domination number of the (n+1)-halved cube graph. - _Eric W. Weisstein_, Aug 31 2016 and Jul 17 2017 (after discussion with Stan Wagon) %D A029866 G. D. Cohen et al., Covering Codes, North-Holland, 1997, p. 166. %H A029866 R. Bertolo, Patric R. J. Östergård and W. D. Weakley, <a href="http://dx.doi.org/10.1002/jcd.20008">An updated table of binary/ternary mixed covering codes</a>, J. Combin. Designs, 12 (2004), 157-176, DOI:10.1002/jcd.20008. [a(9)=16, bounds for n>9] %H A029866 Dmitry Kamenetsky, <a href="/A029866/a029866.txt">Best known solutions for n <= 11.</a> %H A029866 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/DominationNumber.html">Domination Number</a> %H A029866 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/HalvedCubeGraph.html">Halved Cube Graph</a> %H A029866 <a href="/index/Coa#covcod">Index entries for sequences related to covering codes</a> %Y A029866 A column of A060438. %Y A029866 Cf. A000983 (domination number of the n-hypercube graph Q_n). %K A029866 nonn,more %O A029866 2,2 %A A029866 _N. J. A. Sloane_ %E A029866 a(9) from _Andrey Zabolotskiy_, Sep 01 2016