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 A188412 #7 Jul 22 2025 11:11:37 %S A188412 46,1308,21965,252493,2181522,15083334,87171345,434626896,1914365683, %T A188412 7586544223,27443717856,91677539685,285511159634,835479072942, %U A188412 2312389036003,6087264779565,15314086591293,36970334246131 %N A188412 Number of (5*n)X5 binary arrays with rows in nonincreasing order, n ones in every column and no more than 3 ones in any row. %C A188412 Column 5 of A188416 %H A188412 R. H. Hardin, <a href="/A188412/b188412.txt">Table of n, a(n) for n = 1..19</a> %e A188412 Some solutions for 10X5 %e A188412 ..1..1..0..0..0....1..0..0..0..0....1..1..0..0..0....1..0..1..0..0 %e A188412 ..1..0..0..0..0....1..0..0..0..0....1..0..1..1..0....1..0..0..1..1 %e A188412 ..0..1..0..1..1....0..1..1..1..0....0..1..0..0..0....0..1..0..0..0 %e A188412 ..0..0..1..0..0....0..1..1..1..0....0..0..1..0..1....0..1..0..0..0 %e A188412 ..0..0..1..0..0....0..0..0..0..1....0..0..0..1..0....0..0..1..0..0 %e A188412 ..0..0..0..1..1....0..0..0..0..1....0..0..0..0..1....0..0..0..1..0 %e A188412 ..0..0..0..0..0....0..0..0..0..0....0..0..0..0..0....0..0..0..0..1 %e A188412 ..0..0..0..0..0....0..0..0..0..0....0..0..0..0..0....0..0..0..0..0 %e A188412 ..0..0..0..0..0....0..0..0..0..0....0..0..0..0..0....0..0..0..0..0 %e A188412 ..0..0..0..0..0....0..0..0..0..0....0..0..0..0..0....0..0..0..0..0 %K A188412 nonn %O A188412 1,1 %A A188412 _R. H. Hardin_ Mar 30 2011