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.

A219147 Unchanging value maps: number of 6Xn binary arrays indicating the locations of corresponding elements unequal to no horizontal, diagonal or antidiagonal neighbor in a random 0..2 6Xn array.

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%I A219147 #5 Jul 23 2025 00:16:43
%S A219147 1,405,5949,73136,989947,12867295,170792866,2268088205,30263321279,
%T A219147 403675695558,5385766437559,71840547896222,958386976026868,
%U A219147 12786233698435986,170595408884312447,2276122067209739706
%N A219147 Unchanging value maps: number of 6Xn binary arrays indicating the locations of corresponding elements unequal to no horizontal, diagonal or antidiagonal neighbor in a random 0..2 6Xn array.
%C A219147 Row 6 of A219142
%e A219147 Some solutions for n=3
%e A219147 ..1..0..0....0..0..0....1..0..1....1..0..1....1..0..0....1..0..0....1..0..1
%e A219147 ..0..0..0....1..0..0....0..0..1....0..0..1....0..0..1....1..0..1....0..0..1
%e A219147 ..1..0..1....0..0..1....1..0..0....0..0..0....1..0..1....1..0..0....1..0..1
%e A219147 ..0..1..0....1..0..0....1..0..0....1..0..0....1..0..1....1..0..0....1..0..1
%e A219147 ..0..0..0....0..0..1....0..0..1....1..0..0....0..0..1....0..0..0....0..0..1
%e A219147 ..0..0..0....0..0..0....0..0..1....1..0..0....1..0..0....1..0..1....0..0..1
%K A219147 nonn
%O A219147 1,2
%A A219147 _R. H. Hardin_ Nov 12 2012