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 A034215 #12 Jul 08 2025 20:09:37 %S A034215 1,1,3,10,34,105,321,846,1984,4023,7074,10770,14253,16384,16384,14253, %T A034215 10770,7074,4023,1984,846,321,105,34,10,3,1,1 %N A034215 Number of ternary codes of length 3 with n words. %H A034215 H. Fripertinger, <a href="http://www.mathe2.uni-bayreuth.de/frib/codes/tables.html">Isometry Classes of Codes</a> %H A034215 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 A034215 Cf. A034188-. %K A034215 nonn,fini,full %O A034215 0,3 %A A034215 _N. J. A. Sloane_