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 A139675 #8 Mar 09 2020 20:57:11 %S A139675 1,2620,8372754,30649435140,133475706272700,711040444591249476, %T A139675 4686484162304929219950,38295413179145036856212700, %U A139675 386860001875783390762182911250,4805622573099374975572752075805000,72929153106385401417284439399165879652 %N A139675 Number of n X n symmetric binary matrices with all row sums 8. %H A139675 Andrew Howroyd, <a href="/A139675/b139675.txt">Table of n, a(n) for n = 8..20</a> %Y A139675 Column k=8 of A333157 and row 8 of A188448. %K A139675 nonn %O A139675 8,2 %A A139675 _R. H. Hardin_, Jun 12 2008 %E A139675 Terms a(13) and beyond from _Andrew Howroyd_, Mar 09 2020