A034246 - OEIS

%I #9 Aug 09 2020 07:27:24

%S 0,26,364843,1502295684,3667889498353,6925787777638463,

%T 11005421717482468773,15234448027502727073180,

%U 18726377123294059174412659,20713142556674464760256080736,20828433424562605033363194192578,19200438068661753335735705157476694

%N Number of quaternary codes (not necessarily linear) of length n with 9 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 a(10)-a(12) from _Sean A. Irvine_, Aug 09 2020