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 A220150 #6 May 10 2021 00:49:48 %S A220150 15,88,645,4559,34959,279304,2173203,16032779,111800304,739040657, %T A220150 4649261872,27940861285,160944594371,891059955504,4752920160872, %U A220150 24475451373463,121902117207744,588193576732660,2753698006392772 %N A220150 Number of n X 5 arrays of the minimum value of corresponding elements and their horizontal or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 n X 5 array. %C A220150 Column 5 of A220153. %H A220150 R. H. Hardin, <a href="/A220150/b220150.txt">Table of n, a(n) for n = 1..111</a> %e A220150 Some solutions for n=3 %e A220150 ..2..0..0..0..0....1..0..0..0..0....1..0..0..0..0....0..0..0..0..0 %e A220150 ..2..2..2..0..0....2..1..0..0..0....2..1..1..0..0....1..0..0..0..0 %e A220150 ..2..2..2..0..0....2..1..0..0..0....2..2..1..1..1....1..0..0..0..1 %Y A220150 Cf. A220153. %K A220150 nonn %O A220150 1,1 %A A220150 _R. H. Hardin_ Dec 06 2012