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
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]
Anatoly Dymarsky and Alfred Shapere, Quantum stabilizer codes, lattices, and CFTs, arXiv:2009.01244 [hep-th], 2020.
G. Nebe, E. M. Rains and N. J. A. Sloane, Self-Dual Codes and Invariant Theory, Springer, Berlin, 2006.
CROSSREFS
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