A303414 Number of 7Xn 0..1 arrays with every element equal to 1, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

0, 421, 10384, 15852, 115770, 2158662, 24386918, 158640643, 1293822589, 14788283853, 149020593141, 1275569366713, 11671994401668, 115222219445362, 1107799093548111, 10250710845474527, 96126433140397235, 918622040686576956

Offset

1,2

Comments

Row 7 of A303410.

Links

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

Example

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

Crossrefs

Cf. A303410.

Sequence in context: A302732 A251198 A302533 * A242149 A083193 A340871

Adjacent sequences: A303411 A303412 A303413 * A303415 A303416 A303417

Keyword

nonn

Author

R. H. Hardin, Apr 23 2018

Status

approved