This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A034200 #12 Jul 08 2025 20:07:33 %S A034200 0,0,3,27,131,497,1606,4647,12320,30493,71218,158374,337375,691981, %T A034200 1371917,2637956,4932911,8992413,16013007,27904818,47663115,79909497, %U A034200 131666339 %N A034200 Number of binary codes (not necessarily linear) of length n with 5 words. %H A034200 H. Fripertinger, <a href="http://www.mathe2.uni-bayreuth.de/frib/codes/tables.html">Isometry Classes of Codes</a> %H A034200 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 A034200 Cf. A034188-. %K A034200 nonn %O A034200 1,3 %A A034200 _N. J. A. Sloane_ %E A034200 a(15)-a(23) from _Sean A. Irvine_, Aug 07 2020