A302964 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

64, 5135, 100161, 2257439, 52646395, 1233435694, 28906043997, 677939939546, 15913688413086, 373691293530910, 8777023711297082, 206177629016156813, 4843679190297598859, 113798041132055558867, 2673689164053615749675

Offset

1,1

Comments

Column 7 of A302965.

Links

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

Example

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

Crossrefs

Cf. A302965.

Sequence in context: A146496 A058874 A302264 * A302807 A303468 A220578

Adjacent sequences: A302961 A302962 A302963 * A302965 A302966 A302967

Keyword

nonn

Author

R. H. Hardin, Apr 16 2018

Status

approved