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A232521 Number of (6+1)X(n+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally, diagonally or antidiagonally, with no adjacent elements equal 1
52, 11900, 4416, 1110752, 399122, 105188684, 38988416, 9962578834, 3778921534, 943473527702, 366611360006, 89351184548884, 35541201208134, 8461935007869746, 3443798169301412, 801382290095806940, 333518031672301528 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 6 of A232515

LINKS

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

R. H. Hardin, Empirical recurrence of order 90

FORMULA

Empirical recurrence of order 90 (see link above)

EXAMPLE

Some solutions for n=3

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A209462 A209524 A208100 * A200806 A208305 A098148

Adjacent sequences:  A232518 A232519 A232520 * A232522 A232523 A232524

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 25 2013

STATUS

approved

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Last modified July 29 16:44 EDT 2021. Contains 346346 sequences. (Running on oeis4.)