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.

A219006 Unmatched value maps: number of 5Xn binary arrays indicating the locations of corresponding elements not equal to any horizontal, diagonal or antidiagonal neighbor in a random 0..2 5Xn array.

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%I A219006 #5 Jul 23 2025 00:10:38
%S A219006 1,454,17776,461681,13259232,401608939,12030873701,357976038469
%N A219006 Unmatched value maps: number of 5Xn binary arrays indicating the locations of corresponding elements not equal to any horizontal, diagonal or antidiagonal neighbor in a random 0..2 5Xn array.
%C A219006 Row 5 of A219002
%e A219006 Some solutions for n=3
%e A219006 ..0..0..1....1..1..1....0..0..0....0..0..1....1..1..0....1..0..0....1..0..0
%e A219006 ..0..0..1....0..0..0....1..1..1....0..0..1....0..0..0....0..1..0....1..0..0
%e A219006 ..1..0..1....1..1..1....1..0..1....0..1..1....0..1..0....1..1..1....1..1..0
%e A219006 ..1..0..1....1..0..1....0..0..0....1..0..0....1..1..0....0..0..1....1..0..1
%e A219006 ..0..1..0....0..1..0....1..0..1....0..0..0....1..0..1....0..0..1....0..1..0
%K A219006 nonn
%O A219006 1,2
%A A219006 _R. H. Hardin_ Nov 09 2012