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 A172555 #21 Oct 12 2024 21:14:47 %S A172555 1,70,44730,60871300,116963796250,273957842462220,729833528645228700, %T A172555 2128370421607383353400,6637298299496411164868250, %U A172555 21796558191507153941744357500,74580431332898028185458459628980,263863554962023852690547420699517000,959794291357783500093926796260896462300 %N A172555 Number of 2*n X 8 binary arrays with row sums 4 and column sums n. %H A172555 Christoph Koutschan, <a href="/A172555/b172555.txt">Table of n, a(n) for n = 0..150</a> (terms n=1..33 from R. H. Hardin) %H A172555 Robert Dougherty-Bliss, Christoph Koutschan, Natalya Ter-Saakov, and Doron Zeilberger, <a href="https://arxiv.org/abs/2410.07435">The (Symbolic and Numeric) Computational Challenges of Counting 0-1 Balanced Matrices</a>, arXiv:2410.07435 [math.CO], 2024. %Y A172555 Column k=4 of A376935. %K A172555 nonn %O A172555 0,2 %A A172555 _R. H. Hardin_, Feb 06 2010 %E A172555 a(0)=1 prepended by _Christoph Koutschan_, Oct 12 2024