cp's OEIS Frontend

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.

A219445 Unmatched value maps: number of 7Xn binary arrays indicating the locations of corresponding elements not equal to any horizontal, diagonal or antidiagonal neighbor in a random 0..1 7Xn array.

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%I A219445 #5 Jul 23 2025 00:28:13
%S A219445 1,1035,25147,465400,9230353,180983751,3553813654,70729832177,
%T A219445 1404298087609,27962151080194,556217340268058
%N A219445 Unmatched value maps: number of 7Xn binary arrays indicating the locations of corresponding elements not equal to any horizontal, diagonal or antidiagonal neighbor in a random 0..1 7Xn array.
%C A219445 Row 7 of A219441
%e A219445 Some solutions for n=3
%e A219445 ..1..0..1....1..0..1....1..0..1....0..0..0....1..0..0....1..0..0....0..0..1
%e A219445 ..0..0..0....0..0..0....0..0..0....1..0..0....1..0..1....1..0..1....0..0..0
%e A219445 ..0..0..1....1..0..1....0..0..0....1..0..1....0..0..1....1..0..0....1..0..1
%e A219445 ..1..0..0....1..0..1....0..0..1....1..0..0....1..0..0....0..0..1....1..0..0
%e A219445 ..1..0..0....1..0..0....1..0..1....0..0..0....0..0..0....0..0..1....1..0..0
%e A219445 ..1..0..1....0..0..0....0..1..0....0..0..0....0..1..0....1..0..1....1..0..1
%e A219445 ..1..1..1....0..1..0....0..0..0....0..1..0....1..1..1....1..0..0....1..1..1
%K A219445 nonn
%O A219445 1,2
%A A219445 _R. H. Hardin_ Nov 20 2012