cp's OEIS Frontend

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.

A322073 Number of binary self-dual codes that share the most common weight distribution for binary self-dual codes of length 2n.

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%I A322073 #17 Dec 04 2018 04:13:31
%S A322073 1,1,1,1,1,1,1,2,2,2,2,2,3,10,16,53,553,14536
%N A322073 Number of binary self-dual codes that share the most common weight distribution for binary self-dual codes of length 2n.
%C A322073 The weight distribution list [w_0,w_1,...,w_30] = [1,0,0,6,0,53,0,339,0,1782,5284,0,8919,...,1] where w_i is the number of codewords of weight i, represents the most common weight distribution for the binary self-dual codes of length 2*15 = 30.  There are a(15) = 16 binary self-dual codes that have this weight enumerator.  Ellipses are used to shorten the list since the list is symmetrical (i.e., w_n = w_{30-n}).
%C A322073 The indexing of the list is 2n since there are no binary self-dual codes of odd length.
%H A322073 W. Cary Huffman and Vera Pless, <a href="https://doi.org/10.1017/CBO9780511807077">Fundamentals of Error Correcting Codes</a>, Cambridge University Press, 2003, Pages 7,252-282,338-393.
%Y A322073 Cf. A296086, A321969.
%K A322073 nonn,more
%O A322073 1,8
%A A322073 _Nathan J. Russell_, Nov 25 2018