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A184490
Number of (n+1)X3 0..2 arrays with every 2X2 subblock sum greater than 4.
1
165, 1983, 20514, 225739, 2429833, 26384550, 285552669, 3094453927, 33517063586, 363104617411, 3933373186569, 42609958428230, 461585542594517, 5000289770972767, 54167328433304858, 586786270194480467
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OFFSET
1,1
COMMENTS
Column 2 of
A184497
LINKS
R. H. Hardin,
Table of n, a(n) for n = 1..200
FORMULA
Empirical: a(n)=8*a(n-1)+42*a(n-2)-106*a(n-3)-213*a(n-4)+351*a(n-5)+186*a(n-6)-256*a(n-7)-40*a(n-8)+48*a(n-9)
EXAMPLE
Some solutions for 5X3
..0..2..0....0..2..1....0..2..2....0..2..1....0..2..2....0..2..2....0..2..1
..2..2..1....2..2..1....1..2..0....1..2..2....2..2..2....2..1..1....2..1..2
..2..1..2....2..2..1....1..2..2....0..2..2....0..1..2....2..2..2....0..2..1
..1..2..0....2..2..2....1..2..2....2..2..2....2..2..2....2..1..1....1..2..1
..1..2..2....2..1..0....2..2..1....0..2..0....0..1..1....2..2..1....2..2..0
CROSSREFS
Sequence in context:
A241614
A225715
A066177
*
A027796
A145055
A194483
Adjacent sequences:
A184487
A184488
A184489
*
A184491
A184492
A184493
KEYWORD
nonn
AUTHOR
R. H. Hardin
, Jan 15 2011
STATUS
approved
