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 A279462 Number of nX4 0..1 arrays with no element equal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards. 1

%I

%S 2,20,180,1722,15484,129914,1079792,8845592,71540206,572555634,

%T 4544198480,35814522446,280584310722,2186897305592,16968580781888,

%U 131145107324352,1010053181919720,7755079215544062,59376833021426668

%N Number of nX4 0..1 arrays with no element equal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

%C Column 4 of A279466.

%H R. H. Hardin, <a href="/A279462/b279462.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%Y Cf. A279466.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 12 2016

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Last modified December 15 22:02 EST 2019. Contains 330012 sequences. (Running on oeis4.)