A297700 Number of 7Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 2 or 4 neighboring 1s.

128, 747, 32173, 358972, 10084740, 150761147, 3487451085, 59854521809, 1263544138037, 23153469283080, 468020809803575, 8846294320139442, 175169339607743899, 3359920008363870018, 65882834491610105219

Offset

1,1

Comments

Row 7 of A297694.

Links

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

Example

Some solutions for n=3
..0..1..0. .0..0..0. .0..0..0. .1..0..1. .1..0..1. .0..1..0. .1..1..1
..0..0..0. .0..1..0. .0..0..0. .1..0..0. .0..0..0. .1..0..1. .0..1..0
..1..0..0. .0..1..0. .1..0..1. .1..0..0. .1..1..1. .1..1..1. .0..1..0
..0..0..0. .1..0..1. .1..0..0. .0..0..0. .1..1..1. .0..1..0. .0..0..0
..0..1..0. .0..1..0. .0..0..0. .0..0..0. .0..0..0. .0..0..0. .0..0..1
..0..0..0. .0..1..0. .0..0..1. .1..0..0. .0..0..0. .0..1..1. .0..0..1
..0..1..0. .0..1..0. .1..0..0. .0..0..1. .0..0..0. .1..1..0. .1..0..1

Crossrefs

Cf. A297694.

Sequence in context: A349110 A366827 A297463 * A218070 A188151 A372094

Adjacent sequences: A297697 A297698 A297699 * A297701 A297702 A297703

Keyword

nonn

Author

R. H. Hardin, Jan 03 2018

Status

approved