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Number of nX6 0..2 arrays with no element unequal to a strict majority of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.
0

%I #3 Dec 21 2016 10:39:32

%S 30,610,11983,226118,3786373,59485548,887774030,12785911872,

%T 178956329859,2449659253722,32922293647257,435782154193602,

%U 5694447390415947

%N Number of nX6 0..2 arrays with no element unequal to a strict majority of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

%C Column 6 of A279871.

%e Some solutions for n=3

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

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

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

%Y Cf. A279871.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 21 2016