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A207049 Number of (n+1)X8 0..2 arrays with every 2X3 or 3X2 subblock having exactly one clockwise edge increases 1
41589, 9582, 5850, 9144, 13752, 19200, 35904, 54528, 77376, 146304, 223200, 316032, 590592, 895104, 1264512, 2362368, 3580416, 5058048, 9449472, 14321664, 20232192, 37797888, 57286656, 80928768, 151191552, 229146624, 323715072, 604766208 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A207050

LINKS

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

FORMULA

Empirical: a(n) = 4*a(n-3) for n>15

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A202718 A165114 A002879 * A236482 A163392 A262801

Adjacent sequences:  A207046 A207047 A207048 * A207050 A207051 A207052

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 14 2012

STATUS

approved

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Last modified October 16 23:55 EDT 2021. Contains 348048 sequences. (Running on oeis4.)