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A210177 Number of (n+1)X3 0..3 arrays containing all values 0..3 with every 2X2 subblock having three or four distinct values, and new values 0..3 introduced in row major order 1
51, 2316, 79017, 2563795, 82255351, 2632469015, 84200356757, 2692825679001, 86117153792391, 2754026796151627, 88073648144059741, 2816590158892560329, 90074382683817260687, 2880573249877838455779, 92120555990382118611861 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A210183

LINKS

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

FORMULA

Empirical: a(n) = 39*a(n-1) -211*a(n-2) -523*a(n-3) +2954*a(n-4) -1030*a(n-5) -4272*a(n-6) +2096*a(n-7) -192*a(n-8)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A288604 A278305 A231660 * A210080 A218752 A097836

Adjacent sequences:  A210174 A210175 A210176 * A210178 A210179 A210180

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 18 2012

STATUS

approved

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Last modified May 27 14:37 EDT 2022. Contains 354105 sequences. (Running on oeis4.)