A300137 Number of nX7 0..1 arrays with every element equal to 0, 3, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

1, 22, 673, 3273, 80126, 1118800, 20405641, 375468115, 6965745267, 133609996968, 2564144922717, 49584317553511, 961358616451397, 18667709860965983, 362920266075365594, 7059147752281679470, 137357501865894599487

Offset

1,2

Comments

Column 7 of A300138.

Links

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

Example

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

Crossrefs

Cf. A300138.

Sequence in context: A223624 A230836 A137262 * A025760 A229124 A262417

Adjacent sequences: A300134 A300135 A300136 * A300138 A300139 A300140

Keyword

nonn

Author

R. H. Hardin, Feb 26 2018

Status

approved