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A207046 Number of (n+1)X5 0..2 arrays with every 2X3 or 3X2 subblock having exactly one clockwise edge increases 1
1416, 1182, 1272, 2244, 3408, 4836, 9144, 13950, 19752, 36912, 55944, 79032, 147648, 223776, 316128, 590592, 895104, 1264512, 2362368, 3580416, 5058048, 9449472, 14321664, 20232192, 37797888, 57286656, 80928768, 151191552, 229146624 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 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>12

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A143192 A237863 A263671 * A237220 A188099 A252106

Adjacent sequences:  A207043 A207044 A207045 * A207047 A207048 A207049

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 14 2012

STATUS

approved

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Last modified October 26 02:14 EDT 2021. Contains 348256 sequences. (Running on oeis4.)