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A232586 Number of (n+1)X(5+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or antidiagonally, with no adjacent elements equal 1
20, 108, 606, 3002, 14398, 66950, 306022, 1382638, 6200520, 27671244, 123093664, 546418140, 2422183000, 10727201704, 47478696368, 210055317910, 929074602120, 4108554199540, 18166666165648, 80320554722730, 355103563888676 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A232589

LINKS

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

FORMULA

Empirical: a(n) = 9*a(n-1) -22*a(n-2) -8*a(n-3) +89*a(n-4) -75*a(n-5) -75*a(n-6) +136*a(n-7) -21*a(n-8) -51*a(n-9) +2*a(n-10) +24*a(n-11) -3*a(n-13) -a(n-14)

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

CROSSREFS

Sequence in context: A135174 A173963 A202957 * A189437 A285698 A109854

Adjacent sequences:  A232583 A232584 A232585 * A232587 A232588 A232589

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 26 2013

STATUS

approved

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Last modified May 23 23:42 EDT 2022. Contains 353993 sequences. (Running on oeis4.)