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 A219592 #6 Jul 23 2025 00:33:37 %S A219592 15,55,550,4152,26006,164075,1093496,7362866,47724022,292277921, %T A219592 1695340197,9384561666,49848123324,254860709784,1257031665966, %U A219592 5994561288262,27703365847356,124331694874481,542842646444008 %N A219592 Number of nX5 arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 nX5 array. %C A219592 Column 5 of A219595 %H A219592 R. H. Hardin, <a href="/A219592/b219592.txt">Table of n, a(n) for n = 1..25</a> %e A219592 Some solutions for n=3 %e A219592 ..1..1..0..0..0....2..0..0..0..0....1..0..0..0..0....1..1..1..1..0 %e A219592 ..1..1..0..0..0....2..1..0..0..0....1..1..0..0..0....1..1..1..0..0 %e A219592 ..1..1..1..0..0....2..2..1..1..0....2..1..2..2..1....2..1..0..0..0 %K A219592 nonn %O A219592 1,1 %A A219592 _R. H. Hardin_ Nov 23 2012