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A285155 Number of 4 X n 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1. 1
0, 56, 786, 11574, 159060, 2284666, 33371602, 495256266, 7426444716, 112236717358, 1706444466326, 26070175620594, 399870502837122, 6153779131538066, 94972379110894900, 1469319459956729810 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 4 of A285152.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..176

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A285152.

Sequence in context: A105940 A175602 A227059 * A278197 A182866 A008389

Adjacent sequences:  A285152 A285153 A285154 * A285156 A285157 A285158

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 12 2017

STATUS

approved

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Last modified October 24 20:35 EDT 2021. Contains 348233 sequences. (Running on oeis4.)