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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.

A220390 Majority value maps: number of 5Xn binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal and antidiagonal neighbors in a random 0..1 5Xn array.

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%I A220390 #5 Jul 23 2025 01:07:51
%S A220390 1,200,4160,73066,1829169,42415575,953142266,21739995768,495718486488,
%T A220390 11288328674868,257120991237495,5856859209332488
%N A220390 Majority value maps: number of 5Xn binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal and antidiagonal neighbors in a random 0..1 5Xn array.
%C A220390 Row 5 of A220386
%e A220390 Some solutions for n=3
%e A220390 ..1..1..1....0..0..0....1..1..0....0..0..1....0..0..1....0..1..1....1..0..0
%e A220390 ..0..0..0....0..0..1....1..1..0....1..1..1....0..0..1....1..0..0....0..0..0
%e A220390 ..0..0..1....1..1..0....1..1..1....0..0..0....1..1..1....0..1..1....1..0..1
%e A220390 ..1..0..1....0..0..1....1..0..0....0..1..1....0..0..1....1..1..1....1..1..1
%e A220390 ..1..1..0....0..1..1....1..1..1....1..1..0....1..1..1....0..1..1....1..0..0
%K A220390 nonn
%O A220390 1,2
%A A220390 _R. H. Hardin_ Dec 13 2012

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