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A209552 1/4 the number of (n+1)X8 0..3 arrays with every 2X2 subblock having exactly two distinct clockwise edge differences 1
6049, 490547, 35741496, 2708892873, 203828058161, 15380031974285, 1159953545419801, 87501032165288030, 6600426667881339226, 497894721865502792367, 37557974910650911070499, 2833135360759134027255304 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A209553

LINKS

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

EXAMPLE

Some solutions for n=4

..1..2..3..0..1..0..3..2....0..1..0..3..0..1..2..3....1..0..3..0..1..2..3..2

..0..3..2..1..0..1..2..1....1..0..1..2..1..2..3..2....0..1..2..1..0..3..2..1

..3..0..1..2..1..0..1..0....2..1..0..3..0..3..2..1....3..2..3..0..1..2..3..2

..2..1..2..3..0..1..0..1....3..0..1..2..1..2..1..2....0..1..2..1..0..1..0..1

..1..0..3..2..1..0..1..0....2..1..0..1..2..3..2..1....3..2..3..0..1..0..1..0

CROSSREFS

Sequence in context: A269899 A157267 A283932 * A238042 A251818 A241244

Adjacent sequences:  A209549 A209550 A209551 * A209553 A209554 A209555

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 10 2012

STATUS

approved

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Last modified December 2 17:48 EST 2021. Contains 349445 sequences. (Running on oeis4.)