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A004043 The coding-theoretic function A(n,8,8). 3

%I #17 Oct 24 2023 06:13:42

%S 1,1,1,1,3,3,7,15,30,34

%N The coding-theoretic function A(n,8,8).

%C 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 CRC Handbook of Combinatorial Designs, 1996, p. 411.

%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="http://dx.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>

%Y Cf. A005851: A(n,8,5), A005852: A(n,8,6), A005853: A(n,8,7).

%Y Cf. A005866: A(n,8); A030069 (size of d=8, w=8 lexicographic codes).

%K nonn,hard

%O 8,5

%A _N. J. A. Sloane_

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Last modified June 8 03:10 EDT 2024. Contains 373207 sequences. (Running on oeis4.)