A298726 Number of nX7 0..1 arrays with every element equal to 0, 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero.

1, 130, 119, 712, 3676, 16320, 76983, 380106, 1892587, 9597169, 48598454, 246246047, 1246714439, 6319048613, 32032228345, 162468899792, 824193865328, 4181860443550, 21218926355643, 107671599941726, 546370612376581

Offset

1,2

Comments

Column 7 of A298727.

Links

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

Example

Some solutions for n=7
..0..0..0..0..1..1..1. .0..0..1..1..1..0..0. .0..0..0..1..1..1..1
..0..1..1..0..1..1..1. .0..1..0..0..0..1..0. .0..0..0..1..0..0..1
..1..0..1..0..1..1..1. .0..1..1..1..1..1..0. .0..0..0..1..0..1..0
..1..0..1..0..0..0..0. .1..0..0..0..0..0..0. .0..0..0..1..1..0..0
..0..1..0..1..1..1..0. .1..1..0..1..1..1..1. .0..0..0..1..0..1..0
..1..0..0..0..1..0..1. .0..0..0..1..1..1..1. .0..0..0..1..0..1..0
..1..1..1..1..0..1..1. .0..1..0..1..1..1..1. .0..0..0..1..1..0..0

Crossrefs

Cf. A298727.

Sequence in context: A375387 A297942 A298553 * A299560 A043604 A250740

Adjacent sequences: A298723 A298724 A298725 * A298727 A298728 A298729

Keyword

nonn

Author

R. H. Hardin, Jan 25 2018

Status

approved