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A206059 Number of (n+1)X5 0..3 arrays with every 2X3 or 3X2 subblock having exactly two clockwise edge increases 1
170688, 1390488, 11155584, 111242648, 1198231144, 12877680064, 144759802024, 1569116858248, 16924630879224, 190329775107408, 2063119504595544, 22257017331799496, 250239172110308400, 2712629181092377160 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A206063

LINKS

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

FORMULA

Empirical: a(n) = 1307*a(n-3) +24*a(n-4) +677*a(n-5) +44*a(n-6) +256*a(n-7) for n>16

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A254480 A126894 A251408 * A235238 A236985 A234088

Adjacent sequences:  A206056 A206057 A206058 * A206060 A206061 A206062

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 03 2012

STATUS

approved

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Last modified September 20 05:24 EDT 2021. Contains 347577 sequences. (Running on oeis4.)