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%I #13 Apr 15 2019 01:34:34
%S 2,10,82,1894
%N Number of strictly Type II self-dual codes over F_2 + u*F_2 of length 4n.
%H W. C. Huffman, <a href="https://doi.org/10.1016/j.ffa.2005.05.012">On the classification and enumeration of self-dual codes</a>, Finite Fields Applic., 11 (2005), 451-490.
%H G. Nebe, E. M. Rains and N. J. A. Sloane, <a href="http://neilsloane.com/doc/cliff2.html">Self-Dual Codes and Invariant Theory</a>, Springer, Berlin, 2006.
%K nonn,more
%O 1,1
%A _N. J. A. Sloane_, Nov 02 2005