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A285751 Number of 2 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1. 1
0, 4, 8, 44, 150, 540, 2042, 7760, 29654, 114336, 442152, 1713832, 6655764, 25893236, 100873154, 393455752, 1536357188, 6005069488, 23492496948, 91979426392, 360391230046, 1413045432264, 5543910852492, 21763924972776, 85487754197390 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 2 of A285750.

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

CROSSREFS

Cf. A285750.

Sequence in context: A284972 A045639 A337782 * A189538 A270352 A183394

Adjacent sequences:  A285748 A285749 A285750 * A285752 A285753 A285754

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 25 2017

STATUS

approved

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Last modified January 25 06:19 EST 2022. Contains 350565 sequences. (Running on oeis4.)