A034201 - OEIS

%I #12 Jul 08 2025 20:07:40

%S 0,0,3,50,472,3253,18435,91028,404154,1646000,6232542,22151853,

%T 74433912,237790084,725557353,2122652633,5973816190,16219720273,

%U 42595011951,108438121237,268160583493,645345542877,1513887056435

%N Number of binary codes (not necessarily linear) of length n with 6 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 1,3

%A _N. J. A. Sloane_

%E a(15)-a(23) from _Sean A. Irvine_, Aug 07 2020