A206615 - OEIS

A206615

Number of (n+1)X3 0..2 arrays with every 2X3 or 3X2 subblock having no more than two equal edges, and new values 0..2 introduced in row major order

86, 1155, 17708, 270869, 4099700, 62250328, 945314307, 14350695690, 217872572862, 3307774471061, 50218674117508, 762421824428498, 11575121642488239, 175733960717293322, 2668000123752680318

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 2 of A206621

LINKS

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

FORMULA

Empirical: a(n) = 14*a(n-1) +9*a(n-2) +199*a(n-3) -961*a(n-4) +12*a(n-5) -65*a(n-6) +4451*a(n-7) -2813*a(n-8) +623*a(n-9) -1152*a(n-10) +1104*a(n-11) -1036*a(n-12) +248*a(n-13) -408*a(n-14) +280*a(n-15)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A258584 A034277 A254702 * A242092 A232859 A224259

Adjacent sequences: A206612 A206613 A206614 * A206616 A206617 A206618

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 10 2012

STATUS

approved