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A208255 Number of nX5 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 neighbors 1
41, 6144, 920928, 137947632, 20662697664, 3094987890864, 463586569433280, 69438884409258336, 10400988693344761104, 1557924881981189122032, 233355694295516814615312, 34953469637696859885114528 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A208258

LINKS

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

FORMULA

Empirical: a(n) = 171*a(n-1) -3370*a(n-2) +29805*a(n-3) -149108*a(n-4) +447784*a(n-5) -778496*a(n-6) +649216*a(n-7) -114688*a(n-8) for n>9

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A101830 A223130 A091758 * A221325 A104301 A221300

Adjacent sequences:  A208252 A208253 A208254 * A208256 A208257 A208258

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 24 2012

STATUS

approved

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Last modified June 27 04:37 EDT 2022. Contains 354888 sequences. (Running on oeis4.)