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.

A219415 Unmatched value maps: number of 6Xn binary arrays indicating the locations of corresponding elements not equal to any horizontal or antidiagonal neighbor in a random 0..2 6Xn array.

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%I A219415 #5 Jul 23 2025 00:26:12
%S A219415 1,616,50077,2225293,107701719,5618116265,290895472306,14934409278104,
%T A219415 767037960293079
%N A219415 Unmatched value maps: number of 6Xn binary arrays indicating the locations of corresponding elements not equal to any horizontal or antidiagonal neighbor in a random 0..2 6Xn array.
%C A219415 Row 6 of A219410
%e A219415 Some solutions for n=3
%e A219415 ..1..0..0....1..1..0....1..1..1....1..0..1....1..1..0....1..1..0....1..0..0
%e A219415 ..1..0..1....1..0..1....1..1..1....0..1..1....0..0..0....0..0..0....1..0..0
%e A219415 ..1..0..0....0..0..1....0..0..0....0..0..1....1..1..1....0..1..0....1..1..0
%e A219415 ..0..0..0....0..1..1....0..0..1....0..0..0....0..0..1....1..0..1....0..0..1
%e A219415 ..1..1..0....0..0..1....1..0..0....0..1..0....0..1..0....0..0..1....0..1..0
%e A219415 ..0..0..1....1..0..0....0..1..1....0..0..1....1..0..0....1..1..1....1..0..1
%K A219415 nonn
%O A219415 1,2
%A A219415 _R. H. Hardin_ Nov 19 2012