A034244 - OEIS

%I #9 Aug 09 2020 07:27:34

%S 0,26,10164,2097080,311400852,37593032352,3874477609666,

%T 349607878149545,28080454247154740,2032851550702238097,

%U 133978506596448850047,8105582683474629450826

%N Number of quaternary codes (not necessarily linear) of length n with 7 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,more

%O 1,2

%A _N. J. A. Sloane_.

%E a(10)-a(12) from _Sean A. Irvine_, Aug 09 2020