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Search: id:A106165
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| A106165 |
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Number of indecomposable or decomposable Type I but not Type II binary self-dual codes of length 2n. |
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+0
2
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| 0, 1, 1, 1, 1, 2, 3, 4, 5, 9, 16, 25, 46, 103, 261, 731, 3210, 24147
(list; graph; listen)
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OFFSET
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0,6
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REFERENCES
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R. T. Bilous and G. H. J. van Rees, An enumeration of binary self-dual codes of length 32, Designs, Codes Crypt., 26 (2002), 61-86.
J. H. Conway and V. S. Pless, On the enumeration of self-dual codes, J. Comb. Theory, A28 (1980), 26-53.
W. C. Huffman, On the classification and enumeration of self-dual codes, Finite Fields Applic. 11 (2005), 451-490.
V. S. Pless, The children of the (32,16) doubly even codes, IEEE Trans. Inform. Theory, 24 (1978), 738-746.
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LINKS
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G. Nebe, E. M. Rains and N. J. A. Sloane, Self-Dual Codes and Invariant Theory, Springer, Berlin, 2006.
J. H. Conway, V. Pless and N. J. A. Sloane, The Binary Self-Dual Codes of Length Up to 32: A Revised Enumeration, J. Comb. Theory, A28 (1980), 26-53 (Abstract, pdf, ps, Table A, Table D).
E. M. Rains and N. J. A. Sloane, Self-dual codes, pp. 177-294 of Handbook of Coding Theory, Elsevier, 1998 (Abstract, pdf, ps).
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CROSSREFS
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Cf. A003178, A003179, A106162-A106167.
Sequence in context: A107799 A003271 A049796 this_sequence A088817 A018896 A065885
Adjacent sequences: A106162 A106163 A106164 this_sequence A106166 A106167 A106168
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KEYWORD
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nonn
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AUTHOR
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njas, May 09 2005
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