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Number of nX5 0..2 arrays with no element unequal to a strict majority of its horizontal and vertical neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
1

%I #4 Dec 20 2016 10:53:47

%S 8,54,557,5200,44893,373516,3010179,23836450,185854745,1432781380,

%T 10940440805,82884481996,623764753929,4667668549882,34757207667097,

%U 257707173342548,1903562116898937,14013650638972172,102857118300106915

%N Number of nX5 0..2 arrays with no element unequal to a strict majority of its horizontal and vertical neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

%C Column 5 of A279856.

%H R. H. Hardin, <a href="/A279854/b279854.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

%e ..2..2..1..1..0. .1..1..1..0..1. .0..0..0..2..2. .2..2..0..0..0

%e ..2..2..1..1..0. .1..1..1..0..0. .2..2..2..2..2. .2..2..2..2..2

%Y Cf. A279856.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 20 2016