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 A034238 #11 Jul 08 2025 20:12:16 %S A034238 1,1,7,87,6429,2303283,2479201432,3874477609666,6599430028972418, %T A034238 11005421717482468773,17273734529317171068203, %U A034238 25181456057693008339763059,34003737003435994894150148682 %N A034238 Number of quaternary codes of length 7 with n words. %C A034238 a(4^7)=1 is the last term. - _Sean A. Irvine_, Aug 08 2020 %H A034238 H. Fripertinger, <a href="http://www.mathe2.uni-bayreuth.de/frib/codes/tables.html">Isometry Classes of Codes</a> %H A034238 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 A034238 Cf. A034188-. %K A034238 nonn,fini %O A034238 0,3 %A A034238 _N. J. A. Sloane_