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A206090 Number of (n+1) X 5 0..2 arrays with every 2 X 3 or 3 X 2 subblock having exactly two counterclockwise and two clockwise edge increases. 1
3564, 5952, 13344, 48816, 131904, 444480, 1645920, 4484736, 15112320, 55961280, 152481024, 513818880, 1902683520, 5184354816, 17469841920, 64691239680, 176268063744, 593974625280, 2199502149120, 5993114167296, 20195137259520 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A206094.

LINKS

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

FORMULA

Empirical: a(n) = 34*a(n-3) for n>7.

EXAMPLE

Some solutions for n=4:

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

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

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

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

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

CROSSREFS

Sequence in context: A204607 A204600 A204599 * A357590 A071144 A204417

Adjacent sequences: A206087 A206088 A206089 * A206091 A206092 A206093

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 03 2012

STATUS

approved

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Last modified November 29 18:13 EST 2022. Contains 358431 sequences. (Running on oeis4.)