A299553 Number of nX7 0..1 arrays with every element equal to 2, 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

0, 104, 3739, 160089, 10759709, 648002718, 40708113490, 2548695927399, 159913303887571, 10043292894572000, 630817213769269749, 39629356396091207363, 2489689079190364637171, 156417236131600077815031

Offset

1,2

Comments

Column 7 of A299554.

Links

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

Example

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

Crossrefs

Cf. A299554.

Sequence in context: A299601 A217773 A298460 * A187530 A185741 A299333

Adjacent sequences: A299550 A299551 A299552 * A299554 A299555 A299556

Keyword

nonn

Author

R. H. Hardin, Feb 12 2018

Status

approved