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 A004043 #20 Jun 16 2025 15:58:30 %S A004043 1,1,1,1,3,3,7,15,30,34 %N A004043 The coding-theoretic function A(n,8,8). %C A004043 According to Brouwer's web site, 46 <= a(18) <= 49, and a(19..24) = (78, 130, 210, 330, 506, 759). This matches A030069. - _M. F. Hasler_, May 25 2017 %D A004043 CRC Handbook of Combinatorial Designs, 1996, p. 411. %H A004043 A. E. Brouwer, <a href="http://www.win.tue.nl/~aeb/codes/Andw.html">Bounds for binary constant weight codes</a> %H A004043 A. E. Brouwer, J. B. Shearer, N. J. A. Sloane and W. D. Smith, <a href="http://dx.doi.org/10.1109/18.59932">New table of constant weight codes</a>, IEEE Trans. Info. Theory 36 (1990), 1334-1380. %H A004043 <a href="/index/Aa#Andw">Index entries for sequences related to A(n,d,w)</a> %Y A004043 Cf. A005851: A(n,8,5), A005852: A(n,8,6), A005853: A(n,8,7). %Y A004043 Cf. A005866: A(n,8); A030069 (size of d=8, w=8 lexicographic codes). %K A004043 nonn,hard,more %O A004043 8,5 %A A004043 _N. J. A. Sloane_