%I M2729 #25 Dec 14 2018 09:48:11
%S 0,1,1,3,8,18,36,66,80
%N The coding-theoretic function A(n,4,5).
%C The first open case is A(13,4,5) >= 123.
%D CRC Handbook of Combinatorial Designs, 1996, p. 411.
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H A. E. Brouwer, <a href="http://www.win.tue.nl/~aeb/codes/Andw.html">Bounds for binary constant weight codes</a>
%H A. E. Brouwer, J. B. Shearer, N. J. A. Sloane and W. D. Smith, <a href="https://doi.org/10.1109/18.59932">New table of constant weight codes</a>, IEEE Trans. Info. Theory 36 (1990), 1334-1380.
%H <a href="/index/Aa#Andw">Index entries for sequences related to A(n,d,w)</a>
%K nonn,hard,more
%O 4,4
%A _N. J. A. Sloane_
%E a(4) corrected by _Pontus von Brömssen_, Dec 12 2018