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A206055 Number of (n+1)X(n+1) 0..3 arrays with every 2X3 or 3X2 subblock having exactly two clockwise edge increases 0
256, 21140, 1278672, 111242648, 18209383140, 5567891627984, 3548796740666104, 4531526542739275184, 11370221346994594652040, 60827254093069565745485584, 666208249155797450019782873520, 14561819290550204381850004841878000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A206063

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A206181 A251968 A017116 * A237134 A205948 A309827

Adjacent sequences:  A206052 A206053 A206054 * A206056 A206057 A206058

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 03 2012

STATUS

approved

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Last modified November 28 22:01 EST 2021. Contains 349415 sequences. (Running on oeis4.)