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A297724 Number of 5Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 4 neighboring 1s. 1
1, 280, 4090, 34319, 512354, 8103241, 107787351, 1446088760, 20410564866, 284834549399, 3925719705949, 54393595038381, 755754672219017, 10479694450894966, 145249271559341180, 2014480587809008069 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 5 of A297720.

LINKS

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

EXAMPLE

Some solutions for n=4

..0..1..1..0. .0..0..1..1. .1..1..0..0. .0..0..1..1. .0..0..0..0

..0..0..0..1. .0..0..0..0. .1..0..0..0. .0..0..0..1. .0..0..0..1

..0..0..0..0. .1..1..1..1. .1..0..1..1. .0..1..0..0. .1..1..1..1

..0..0..0..0. .0..1..0..1. .0..1..0..0. .0..1..1..1. .0..1..0..0

..0..0..1..1. .1..1..1..1. .1..1..1..0. .1..0..0..1. .1..0..1..1

CROSSREFS

Cf. A297720.

Sequence in context: A297510 A327948 A187384 * A024214 A094895 A223107

Adjacent sequences:  A297721 A297722 A297723 * A297725 A297726 A297727

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 04 2018

STATUS

approved

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Last modified October 18 17:13 EDT 2019. Contains 328186 sequences. (Running on oeis4.)