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 A172558 #25 Oct 12 2024 21:14:33 %S A172558 1,924,32496156,3718394156400,729833528645228700, %T A172558 195428754450309450171024,64051375889927380035549804336, %U A172558 24197157773366540262083203214418624,10156485647319165206190655366818708639900,4623755659802671553551698062433487687144266000,2245303346871705713053772485416749032101579706759056 %N A172558 Number of 2*n X 12 binary arrays with row sums 6 and column sums n. %H A172558 Christoph Koutschan, <a href="/A172558/b172558.txt">Table of n, a(n) for n = 0..39</a> (terms n=1..19 from R. H. Hardin) %H A172558 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 A172558 Column k=6 of A376935. %K A172558 nonn %O A172558 0,2 %A A172558 _R. H. Hardin_, Feb 06 2010 %E A172558 a(0)=1 prepended by _Christoph Koutschan_, Oct 12 2024