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A232903 Number of (n+1)X(3+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or antidiagonally 1
52, 320, 4928, 62276, 761860, 9880580, 123587140, 1571314692, 19864803028, 251467184100, 3183335705332, 40288593520196, 509981865744852, 6454933266401252, 81703778819302772, 1034162820208546180 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A232908

LINKS

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

FORMULA

Empirical: a(n) = 6*a(n-1) +79*a(n-2) +128*a(n-3) -788*a(n-4) +196*a(n-5) -644*a(n-6) +416*a(n-7) -64*a(n-8)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A079414 A270769 A281396 * A262757 A262477 A264494

Adjacent sequences:  A232900 A232901 A232902 * A232904 A232905 A232906

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 02 2013

STATUS

approved

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Last modified July 28 10:51 EDT 2021. Contains 346326 sequences. (Running on oeis4.)