A283548 Number of 7Xn 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors.

128, 2570, 54211, 1529463, 34266804, 854841910, 20707472573, 500387112083, 12194309578408, 295445669810158, 7175900498325835, 174194410958021304, 4227944315256983524, 102642336532085688286, 2491498898316960926393

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