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Number of quaternary codes (not necessarily linear) of length n with 13 words.
0

%I #8 Aug 09 2020 17:11:16

%S 0,4,160421289,301341514055753,212759983293659858532,

%T 105067580130605231781256012,42603172007898715981922337319015,

%U 14954884176034777008243661081645101440,4653866336699333619983205123375833231719464,1302561543355459585313305069725405805940542534756

%N Number of quaternary codes (not necessarily linear) of length n with 13 words.

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

%H H. Fripertinger, <a href="https://doi.org/10.1023/A:1008248618779">Enumeration, construction and random generation of block codes</a>, Designs, Codes, Crypt., 14 (1998), 213-219.

%Y Cf. A034188-.

%K nonn

%O 1,2

%A _N. J. A. Sloane_.

%E More terms from _Sean A. Irvine_, Aug 09 2020