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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.

A220157 Number of 5Xn 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 5Xn array.

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%I A220157 #5 Jul 23 2025 00:54:16
%S A220157 21,95,727,5410,34959,214767,1272216,7244186,39698797,209815077,
%T A220157 1070798249,5281686410,25200974573,116438844036
%N A220157 Number of 5Xn 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 5Xn array.
%C A220157 Row 5 of A220153
%e A220157 Some solutions for n=3
%e A220157 ..1..1..1....1..0..0....0..0..0....0..0..0....0..0..0....0..0..0....2..1..1
%e A220157 ..1..1..1....1..0..0....1..0..0....1..0..0....1..0..0....1..1..0....2..1..1
%e A220157 ..1..1..1....1..0..0....1..1..2....1..0..0....1..1..1....1..1..1....2..1..1
%e A220157 ..2..1..1....1..1..1....1..1..1....2..1..1....1..1..2....1..0..2....2..2..2
%e A220157 ..2..2..2....2..1..1....2..2..1....2..1..1....2..1..2....2..0..0....2..2..2
%K A220157 nonn
%O A220157 1,1
%A A220157 _R. H. Hardin_ Dec 06 2012

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