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A280479
Number of nX7 0..2 arrays with no element unequal to a strict majority of its horizontal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.
1
54, 884, 55149, 3589912, 208736159, 11437392975, 599110195185, 30314748582007, 1492988077983829, 71948030099393732, 3405865992508069195, 158838750032932099900, 7314605470197927796802, 333202239966625982544310
OFFSET
1,1
COMMENTS
Column 7 of A280480.
LINKS
EXAMPLE
Some solutions for n=3
..0..0..0..0..1..1..1. .0..1..1..2..2..2..0. .0..0..0..0..0..1..1
..0..0..0..2..2..1..0. .1..1..2..2..2..0..0. .1..1..1..0..0..1..1
..2..2..2..2..1..1..1. .1..1..2..2..0..0..0. .1..1..1..1..1..1..1
CROSSREFS
Cf. A280480.
Sequence in context: A298132 A008401 A247048 * A107420 A298069 A281776
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 04 2017
STATUS
approved