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A210273 Half the number of (n+1)X6 0..2 arrays with every 2X2 subblock having two or three distinct clockwise edge differences 1
129684, 47036870, 17097482699, 6218088462292, 2261599192647037, 822588621201609131, 299192733780770135628, 108822749899700419187880, 39581149154521036273501515, 14396506354147981090231615659 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A210276

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A232420 A114668 A128038 * A250961 A225026 A202935

Adjacent sequences: A210270 A210271 A210272 * A210274 A210275 A210276

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 19 2012

STATUS

approved

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Last modified November 27 11:37 EST 2022. Contains 358404 sequences. (Running on oeis4.)