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 A058783 #11 Jan 29 2020 20:33:28 %S A058783 1,1,5,30,332,6414,226041,12848128,1064292052,119252205304, %T A058783 17239075745190,3113843614322530,686491853010870156, %U A058783 181386885029173595218,56595769613704915215101,20597536264356706999502705,8652615103513713632218678155,4157673185369121151936091009448 %N A058783 Number of n-rowed binary matrices with all row sums 4, up to row and column permutation; bipartite graphs with all nodes of degree 4 in a distinguished bipartite n-block, up to isomorphism. %H A058783 <a href="/A050535/a050535.pdf">Number of m-rowed binary matrices with all row sums equal to n, up to row and column permutation</a> %Y A058783 Row n=4 of A331461. %Y A058783 Cf. A050535, A050913, A058784, A058785. %K A058783 nonn %O A058783 0,3 %A A058783 _Vladeta Jovovic_, Nov 28 2000 %E A058783 Terms a(8)-a(17) from _Max Alekseyev_, May 04 2018