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 A129430 #8 Mar 22 2020 02:00:10 %S A129430 3,26,639,40264,5846105,1620621150,752480161278,538934691750368, %T A129430 562620407713724992,820458681175954269942,1616087981640640784235446, %U A129430 4183688192689449962777539596,13914233045360143936837907106395,58319096569220501055727735345999221 %N A129430 Number of isomorphism classes of connected 5-regular multigraphs of order 2n, loops allowed. %C A129430 Initial terms computed using software at http://users.cecs.anu.edu.au/~bdm/nauty/ %F A129430 Inverse Euler transform of A129431. - _Andrew Howroyd_, Mar 19 2020 %Y A129430 Column k=5 of A333397. %Y A129430 Cf. A129431, A129419, A005967, A085549, A129432, A129434, A129436. %K A129430 nonn %O A129430 1,1 %A A129430 _Brendan McKay_, Apr 15 2007 %E A129430 a(8)-a(14) added by _Andrew Howroyd_, Mar 21 2020