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A283548 Number of 7Xn 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors. 1
128, 2570, 54211, 1529463, 34266804, 854841910, 20707472573, 500387112083, 12194309578408, 295445669810158, 7175900498325835, 174194410958021304, 4227944315256983524, 102642336532085688286, 2491498898316960926393 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A283543.

LINKS

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

R. H. Hardin, Empirical recurrence of order 69

FORMULA

Empirical recurrence of order 69 (see link above)

EXAMPLE

Some solutions for n=3

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

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

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

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

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

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

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

CROSSREFS

Cf. A283543.

Sequence in context: A096961 A231306 A236209 * A297687 A221662 A250282

Adjacent sequences:  A283545 A283546 A283547 * A283549 A283550 A283551

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 10 2017

STATUS

approved

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Last modified May 18 10:28 EDT 2022. Contains 353807 sequences. (Running on oeis4.)