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A094927
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Number of nonisomorphic (possibly decomposable) self-dual quantum codes on n qubits.
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4
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1, 2, 3, 6, 11, 26, 59, 182, 675, 3990, 45144, 1323363
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Also number of nonisomorphic (indecomposable or decomposable) self-dual codes of Type 4^H+ and length n.
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REFERENCES
| Lars Eirik Danielsen and Matthew G. Parker, Spectral Orbits and Peak-to-Average Power Ratio of Boolean Functions with respect to the {I,H,N}^n Transform (2005), http://arxiv.org/abs/cs/0504102. In Sequences and Their Applications-SETA 2004, Lecture Notes in Computer Science, Volume 3486/2005, Springer-Verlag. [Added by N. J. A. Sloane, Jul 08 2009]
L. E. Danielsen and M. G. Parker, On the classification of all self-dual additive codes over GF(4) of length up to 12, Preprint 2005.
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LINKS
| G. Nebe, E. M. Rains and N. J. A. Sloane, Self-Dual Codes and Invariant Theory, Springer, Berlin, 2006.
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CROSSREFS
| See A090899 for more information. Cf. also A110302, A110306.
Sequence in context: A156807 A032256 A051603 * A024423 A115114 A086209
Adjacent sequences: A094924 A094925 A094926 * A094928 A094929 A094930
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KEYWORD
| nonn
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AUTHOR
| Lars Eirik Danielsen (larsed(AT)ii.uib.no) and Matthew G. Parker (matthew(AT)ii.uib.no), Jun 17, 2004.
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