A316445 Number of nX5 0..1 arrays with every element unequal to 1, 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

3, 120, 712, 5256, 43568, 325839, 2520180, 19750414, 153125421, 1191762840, 9283634801, 72267704187, 562765930793, 4382910061762, 34133836239639, 265841655059179, 2070478139861857, 16125743650200990, 125594609626975988

Offset

1,1

Comments

Column 5 of A316448.

Links

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

Example

Some solutions for n=5
..0..0..0..1..1. .0..0..1..1..0. .0..1..1..0..1. .0..0..1..1..0
..1..0..0..1..0. .1..0..1..0..0. .1..1..1..0..0. .1..1..0..1..1
..1..1..0..0..0. .1..1..1..1..1. .0..1..1..0..1. .1..1..1..0..1
..0..0..0..0..1. .0..0..1..1..1. .0..0..1..1..1. .1..0..0..0..1
..0..1..0..0..0. .0..1..1..0..1. .1..1..1..0..1. .0..1..1..1..1

Crossrefs

Cf. A316448.

Sequence in context: A316638 A227480 A304694 * A316127 A317433 A214312

Adjacent sequences: A316442 A316443 A316444 * A316446 A316447 A316448

Keyword

nonn

Author

R. H. Hardin, Jul 03 2018

Status

approved