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A281164
Number of nX7 0..1 arrays with no element equal to more than three of its king-move neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.
1
0, 1388, 84443, 619502, 4098895, 22796763, 111826676, 511077328, 2213577238, 9219387478, 37243761722, 146843636089, 567586366405, 2158163009599, 8094169842566, 30006682413781, 110139856305082, 400800296115796
OFFSET
1,2
COMMENTS
Column 7 of A281165.
LINKS
EXAMPLE
Some solutions for n=3
..0..1..0..1..1..0..1. .0..1..0..0..0..1..0. .0..0..1..1..0..1..0
..1..1..0..1..0..1..1. .0..1..0..1..1..0..1. .1..0..0..1..0..1..1
..0..0..1..1..0..1..0. .1..0..1..0..1..1..0. .1..1..1..0..1..1..0
CROSSREFS
Cf. A281165.
Sequence in context: A253497 A253490 A253451 * A250816 A031983 A249970
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 16 2017
STATUS
approved