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A297700 Number of 7Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 2 or 4 neighboring 1s. 1
128, 747, 32173, 358972, 10084740, 150761147, 3487451085, 59854521809, 1263544138037, 23153469283080, 468020809803575, 8846294320139442, 175169339607743899, 3359920008363870018, 65882834491610105219 (list; graph; refs; listen; history; text; internal format)
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: A333584 A349110 A297463 * A218070 A188151 A297643

Adjacent sequences:  A297697 A297698 A297699 * A297701 A297702 A297703

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 03 2018

STATUS

approved

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Last modified May 16 13:45 EDT 2022. Contains 353704 sequences. (Running on oeis4.)