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A189306 Number of nX3 array permutations with each element moving zero or one space diagonally, horizontally or vertically 1
3, 73, 960, 14714, 216708, 3224934, 47862876, 710856569, 10555661105, 156750811549, 2327708940824, 34565989342645, 513297241320175, 7622351430906057, 113190239801459420, 1680850155699514974 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A189312

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

FORMULA

Empirical: a(n) = 10*a(n-1) +78*a(n-2) -48*a(n-3) -627*a(n-4) +196*a(n-5) +1735*a(n-6) -1148*a(n-7) -879*a(n-8) +788*a(n-9) +131*a(n-10) -144*a(n-11) -22*a(n-12) +6*a(n-13) +a(n-14)

EXAMPLE

Some solutions for 4X3

..0..5..2....3..5..2....0..4..2....3..0..2....1..0..5....0..5..2....4..2..5

..4..3..1....0..7..1....6..3..1....4..5..1....4..8..2....3..7..1....3..0..1

.10.11..7....9..4.11....9..8..5...10.11..8...10..3.11....9..4.11...10..7.11

..6..9..8....6.10..8...10..7.11....9..6..7....6..9..7...10..6..8....6..9..8

CROSSREFS

Sequence in context: A162601 A173807 A093165 * A012810 A020517 A119017

Adjacent sequences:  A189303 A189304 A189305 * A189307 A189308 A189309

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 19 2011

STATUS

approved

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Last modified June 15 00:00 EDT 2021. Contains 345041 sequences. (Running on oeis4.)