A316288 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 3, 6 or 8 king-move adjacent elements, with upper left element zero.

64, 719, 2840, 12454, 164734, 1262767, 10464990, 101136854, 901515338, 8107946080, 74207569963, 676120379468, 6164560394025, 56286220002853, 514605118915259, 4706732283427548, 43060933136041854, 394246533554203877

Offset

1,1

Comments

Column 7 of A316289.

Links

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

Example

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

Crossrefs

Cf. A316289.

Sequence in context: A304774 A316517 A304471 * A306052 A317229 A008513

Adjacent sequences: A316285 A316286 A316287 * A316289 A316290 A316291

Keyword

nonn

Author

R. H. Hardin, Jun 28 2018

Status

approved