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A283783 Number of nX7 0..1 arrays with no 1 equal to more than two of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements. 1

%I #4 Mar 16 2017 12:21:22

%S 0,2410,336614,30330979,2393467823,169720104148,11308125156356,

%T 719819137224851,44286142978155009,2653649902754828202,

%U 155676754281056965035,8975824198199222022171,510082055072987791045820

%N Number of nX7 0..1 arrays with no 1 equal to more than two of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements.

%C Column 7 of A283784.

%H R. H. Hardin, <a href="/A283783/b283783.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=2

%e ..1..1..1..0..1..1..0. .1..0..1..0..1..0..1. .1..1..1..0..0..0..0

%e ..1..0..1..1..0..0..0. .1..1..0..1..1..0..0. .0..0..1..1..1..0..0

%Y Cf. A283784.

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 16 2017

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Last modified March 28 05:02 EDT 2024. Contains 371235 sequences. (Running on oeis4.)