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A302370 Number of 4Xn 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
8, 3, 109, 77, 918, 3125, 21831, 125193, 824459, 5383504, 35779184, 240480550, 1615536651, 10916466595, 73707212142, 498626574631, 3372684616301, 22824815728427, 154471448375476, 1045558911080013, 7077203544387174 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A302367.

LINKS

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

R. H. Hardin, Empirical recurrence of order 63

FORMULA

Empirical recurrence of order 63 (see link above)

EXAMPLE

Some solutions for n=5

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

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

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

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

CROSSREFS

Cf. A302367.

Sequence in context: A302462 A303244 A038281 * A303086 A131502 A302891

Adjacent sequences:  A302367 A302368 A302369 * A302371 A302372 A302373

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 06 2018

STATUS

approved

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Last modified October 27 06:19 EDT 2021. Contains 348271 sequences. (Running on oeis4.)