A297942 Number of nX7 0..1 arrays with every element equal to 0, 2, 3 or 5 king-move adjacent elements, with upper left element zero.

1, 130, 102, 694, 3640, 16198, 76374, 376126, 1869918, 9484034, 48011978, 243246513, 1231030126, 6237187781, 31603163041, 160226927991, 812477894549, 4120721248833, 20900009783256, 106009403420658, 537712102244846

Offset

1,2

Comments

Column 7 of A297943.

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..0. .0..1..1..1..0..1..1. .0..1..1..1..1..1..1
..0..1..1..1..0..1..1. .0..0..1..0..1..0..1. .0..0..1..0..0..0..1
..0..1..0..0..1..0..1. .0..1..1..0..1..0..0. .1..1..0..1..1..1..0
..0..0..1..1..0..0..1. .1..0..0..0..1..1..1. .1..0..0..0..0..0..1
..0..1..0..0..1..0..1. .1..0..1..0..1..0..1. .0..1..1..1..1..1..1
..0..1..1..1..1..0..1. .0..1..1..0..1..0..0. .0..0..1..0..0..0..0
..0..0..0..0..0..1..1. .0..0..0..0..1..1..0. .0..1..1..0..0..0..0

Crossrefs

Cf. A297943.

Sequence in context: A337809 A238613 A113489 * A298553 A298726 A299560

Adjacent sequences: A297939 A297940 A297941 * A297943 A297944 A297945

Keyword

nonn

Author

R. H. Hardin, Jan 09 2018

Status

approved