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A206046 Number of (n+1)X(n+1) 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock equal to one 0
48, 2310, 295392, 99399924, 86276125692, 192565971689028, 1102253485190936160, 16166591528019333325686, 607114854619773061565096460, 58357759658347780979413921776468 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A206054

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A227139 A009992 A042105 * A079240 A275564 A275089

Adjacent sequences:  A206043 A206044 A206045 * A206047 A206048 A206049

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 03 2012

STATUS

approved

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Last modified December 18 23:46 EST 2018. Contains 318245 sequences. (Running on oeis4.)