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A206202 Number of (n+1)X5 0..3 arrays with every 2X3 or 3X2 subblock having exactly one clockwise edge increases 1
7388, 9464, 11832, 32920, 70168, 109720, 337896, 728704, 1137208, 3418192, 7313872, 11389472, 34215016, 73207664, 114003240, 342487240, 732805056, 1141169536, 3428290592, 7335364432, 11423084832, 34317120936, 73426851984 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A206206

LINKS

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

FORMULA

Empirical: a(n) = 10*a(n-3) +a(n-9) for n>18

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A022255 A189504 A028540 * A034279 A031584 A237311

Adjacent sequences:  A206199 A206200 A206201 * A206203 A206204 A206205

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 04 2012

STATUS

approved

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Last modified April 25 18:12 EDT 2019. Contains 322461 sequences. (Running on oeis4.)