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 A034219 #12 Jul 08 2025 20:10:05 %S A034219 1,1,7,87,3990,545544,131828470,35754455353,9300033719253, %T A034219 2216652346764139,480242932559153642,94874768179629903791, %U A034219 17193541252761002222476,2876019980110265392778268 %N A034219 Number of ternary codes of length 7 with n words. %H A034219 Sean A. Irvine, <a href="/A034219/b034219.txt">Table of n, a(n) for n = 0..2187</a> %H A034219 H. Fripertinger, <a href="http://www.mathe2.uni-bayreuth.de/frib/codes/tables.html">Isometry Classes of Codes</a> %H A034219 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 A034219 Cf. A034188-. %K A034219 nonn,fini,full %O A034219 0,3 %A A034219 _N. J. A. Sloane_