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Number of nX6 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 12:39:04

%S 8,280,2138,13968,85844,502276,2848436,15817652,86332266,465260812,

%T 2481799950,13127073212,68942510184,359901720360,1869047959784,

%U 9662464139924,49753587454582,255286283139832,1305758265647346

%N Number of nX6 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 Column 6 of A281765.

%H R. H. Hardin, <a href="/A281763/b281763.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%Y Cf. A281765.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 29 2017