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A206595 Number of (n+1)X3 0..3 arrays with every 2X3 or 3X2 subblock having no more than three equal edges, and new values 0..3 introduced in row major order 1
171, 9449, 551631, 32258200, 1886206112, 110294918412, 6449441361133, 377127604356885, 22052335771550411, 1289498594172126400, 75402743530876523488, 4409135271445054483412, 257821836876089274588349 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A206600

LINKS

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

FORMULA

Empirical: a(n) = 51*a(n-1) +353*a(n-2) +4958*a(n-3) -2678*a(n-4) +14656*a(n-5) -160635*a(n-6) +19303*a(n-7) -859799*a(n-8) +242534*a(n-9) +14671*a(n-10) +3134369*a(n-11) +2183000*a(n-12) +2077689*a(n-13) -573423*a(n-14) -682544*a(n-15) -455304*a(n-16)

EXAMPLE

Some solutions for n=4

..0..1..0....0..0..0....0..0..0....0..0..1....0..0..0....0..0..0....0..0..0

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

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

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

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

CROSSREFS

Sequence in context: A152926 A239270 A262142 * A127959 A046166 A262113

Adjacent sequences:  A206592 A206593 A206594 * A206596 A206597 A206598

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 09 2012

STATUS

approved

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Last modified October 20 15:49 EDT 2021. Contains 348111 sequences. (Running on oeis4.)