A302740 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

64, 8192, 615589, 50012515, 4104115772, 336126343424, 27552364197684, 2258515399666414, 185133937573802146, 15175842668215691966, 1243997339324531820830, 101973231441890685645169

Offset

1,1

Comments

Column 7 of A302741.

Links

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

Example

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

Crossrefs

Cf. A302741.

Sequence in context: A298969 A317564 A299739 * A299660 A300214 A302746

Adjacent sequences: A302737 A302738 A302739 * A302741 A302742 A302743

Keyword

nonn

Author

R. H. Hardin, Apr 12 2018

Status

approved