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A208563 Number of nX4 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than one of its immediate leftward or upward or left-upward diagonal neighbors 1
14, 464, 16608, 600426, 21758476, 788922798, 28608436530, 1037446303548, 37621813069386, 1364314106628550, 49475379592575628, 1794171379245008334, 65063694331223004978, 2359464864203438340188, 85563454475454135771530 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A208567
LINKS
FORMULA
Empirical: a(n) = 61*a(n-1) -1124*a(n-2) +9139*a(n-3) -34187*a(n-4) +44684*a(n-5) +35628*a(n-6) -128720*a(n-7) +102352*a(n-8) -44832*a(n-9) +17472*a(n-10) for n>11
EXAMPLE
Some solutions for n=4
..0..0..0..1....0..0..0..0....0..0..1..2....0..1..2..1....0..0..0..1
..2..1..1..0....1..2..2..2....0..2..2..0....2..2..0..0....2..1..1..2
..0..2..2..1....1..2..1..1....2..0..0..1....0..0..2..1....2..0..0..2
..2..0..0..1....1..2..1..2....2..1..2..1....0..1..0..1....1..0..1..2
CROSSREFS
Sequence in context: A297548 A215787 A005790 * A200061 A171208 A331612
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 28 2012
STATUS
approved

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Last modified May 23 11:57 EDT 2024. Contains 372763 sequences. (Running on oeis4.)