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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.

A220583 Equals one maps: number of 5Xn binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..1 5Xn array.

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%I A220583 #5 Jul 23 2025 01:15:16
%S A220583 1,512,1487,205323,3162375,106841503,2449921734,65126683335
%N A220583 Equals one maps: number of 5Xn binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..1 5Xn array.
%C A220583 Row 5 of A220579
%e A220583 Some solutions for n=3
%e A220583 ..1..0..0....1..0..1....1..0..1....1..0..1....1..0..1....0..0..0....0..0..0
%e A220583 ..0..0..1....1..1..1....1..1..0....1..0..0....1..1..0....0..0..0....0..0..0
%e A220583 ..1..0..0....1..0..0....0..0..1....0..1..0....0..0..0....0..0..1....0..0..0
%e A220583 ..0..0..1....0..0..1....1..0..1....0..0..1....0..1..1....1..0..0....0..0..0
%e A220583 ..1..1..1....1..1..1....1..0..0....1..0..0....1..1..0....0..0..0....0..1..1
%K A220583 nonn
%O A220583 1,2
%A A220583 _R. H. Hardin_ Dec 16 2012

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