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Number of binary codes (not necessarily linear) of length n with 12 words.
0

%I #7 Jul 08 2025 20:08:23

%S 0,0,0,19,65664,73500514,37504171766,12562875567065,3267743403989063,

%T 716661691995997667,138409456269288832810,24126483152959778734211,

%U 3853212295470158037255129

%N Number of binary codes (not necessarily linear) of length n with 12 words.

%D H. Fripertinger, Enumeration, construction and random generation of block codes, Designs, Codes, Crypt., 14 (1998), 213-219.

%H H. Fripertinger, <a href="http://www.mathe2.uni-bayreuth.de/frib/codes/tables.html">Isometry Classes of Codes</a>

%Y Cf. A034188-.

%K nonn

%O 1,4

%A _N. J. A. Sloane_