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A281769 Number of 5Xn 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards. 1

%I #4 Jan 29 2017 12:43:51

%S 0,38,201,1872,12191,85844,589990,3845590,25703392,166880128,

%T 1080273873,6965900750,44487321221,283503705456,1797488483677,

%U 11352536170284,71500155029453,448832589255878,2810514285498993,17557109431928644

%N Number of 5Xn 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

%C Row 5 of A281765.

%H R. H. Hardin, <a href="/A281769/b281769.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

%Y Cf. A281765.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 29 2017

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Last modified July 12 06:35 EDT 2024. Contains 374237 sequences. (Running on oeis4.)