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A303086 Number of 4Xn 0..1 arrays with every element equal to 0, 2, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
8, 3, 112, 90, 1455, 3667, 33152, 157838, 1161232, 7100035, 49678916, 329669849, 2281641594, 15540614996, 107301648292, 737154651791, 5087197252026, 35051028229325, 241871543186476, 1668193998276026, 11511498465288360 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A303084.

LINKS

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

R. H. Hardin, Empirical recurrence of order 67

FORMULA

Empirical recurrence of order 67 (see link above)

EXAMPLE

Some solutions for n=5

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

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

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

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

CROSSREFS

Cf. A303084.

Sequence in context: A303244 A038281 A302370 * A131502 A302891 A303626

Adjacent sequences:  A303083 A303084 A303085 * A303087 A303088 A303089

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 18 2018

STATUS

approved

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Last modified November 29 18:41 EST 2021. Contains 349416 sequences. (Running on oeis4.)