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A110861 Number of even isodual (but not self-dual) binary codes of length 2n. +0
1
0, 0, 1, 3, 8, 20, 67, 331 (list; graph; listen)
OFFSET

1,4

REFERENCES

W. C. Huffman, On the classification and enumeration of self-dual codes, Finite Fields Applic., 11 (2005), 451-490.

CROSSREFS

Sequence in context: A009436 A108189 A148768 this_sequence A027320 A027319 A066212

Adjacent sequences: A110858 A110859 A110860 this_sequence A110862 A110863 A110864

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Sep 19 2005

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Last modified December 5 08:23 EST 2009. Contains 170348 sequences.


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