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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 1
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
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
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 10 2012
STATUS
approved

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Last modified May 23 21:14 EDT 2024. Contains 372765 sequences. (Running on oeis4.)