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A094927 Number of nonisomorphic (possibly decomposable) self-dual quantum codes on n qubits. 4
1, 2, 3, 6, 11, 26, 59, 182, 675, 3990, 45144, 1323363 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Also number of nonisomorphic (indecomposable or decomposable) self-dual codes of Type 4^H+ and length n.

REFERENCES

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.

LINKS

Table of n, a(n) for n=1..12.

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), arxiv: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]

G. Nebe, E. M. Rains and N. J. A. Sloane, Self-Dual Codes and Invariant Theory, Springer, Berlin, 2006.

CROSSREFS

See A090899 for more information. Cf. also A110302, A110306.

Sequence in context: A324765 A208602 A051603 * A024423 A115114 A324768

Adjacent sequences:  A094924 A094925 A094926 * A094928 A094929 A094930

KEYWORD

nonn

AUTHOR

Lars Eirik Danielsen (larsed(AT)ii.uib.no) and Matthew G. Parker (matthew(AT)ii.uib.no), Jun 17, 2004.

STATUS

approved

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Last modified May 23 19:07 EDT 2019. Contains 323528 sequences. (Running on oeis4.)