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A283520 Number of nX6 0..1 arrays with no 1 equal to more than three of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements. 1
0, 145, 26662, 2032993, 136572268, 8593156813, 510843580504, 29325852758117, 1640229831666201, 89905007399752628, 4849467980640486825, 258162615558548188175, 13593142734850883923120, 709070366893625272065463 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 6 of A283522.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=3

..0..0..1..0..1..0. .0..0..1..1..0..0. .1..1..0..0..0..0. .1..0..0..0..1..0

..0..0..1..1..1..1. .1..1..1..1..0..0. .0..0..1..1..1..0. .0..1..1..1..1..0

..0..1..1..0..0..0. .1..0..0..0..0..1. .0..0..1..1..1..0. .1..1..0..1..1..0

CROSSREFS

Cf. A283522.

Sequence in context: A031612 A226849 A097730 * A265439 A060720 A015081

Adjacent sequences:  A283517 A283518 A283519 * A283521 A283522 A283523

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 09 2017

STATUS

approved

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Last modified November 30 11:07 EST 2021. Contains 349419 sequences. (Running on oeis4.)