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 A034240 #11 Jul 08 2025 20:12:29 %S A034240 1,1,9,179,40719,106287822,1295484202258,28080454247154740, %T A034240 720645869857713416245,18726377123294059174412659, %U A034240 464647323565599860735629425620,10778588361453642047099243794276139 %N A034240 Number of quaternary codes of length 9 with n words. %C A034240 a(4^9)=1 is the last term. - _Sean A. Irvine_, Aug 08 2020 %H A034240 H. Fripertinger, <a href="http://www.mathe2.uni-bayreuth.de/frib/codes/tables.html">Isometry Classes of Codes</a> %H A034240 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 A034240 Cf. A034188-. %K A034240 nonn,fini %O A034240 0,3 %A A034240 _N. J. A. Sloane_