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A189446 Number of nX6 array permutations with each element moving zero or one space horizontally or diagonally 1
13, 841, 40106, 2008890, 100047288, 4982424404, 248187289625, 12362821462925, 615823316590381, 30675714678416140, 1528034812741010509, 76115272823689573050, 3791493955944999761482, 188863888740455537178552 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A189449

LINKS

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

FORMULA

Empirical: a(n) = 55*a(n-1) -257*a(n-2) -66*a(n-3) -558*a(n-4) +20414*a(n-5) -105459*a(n-6) +187369*a(n-7) -105459*a(n-8) +20414*a(n-9) -558*a(n-10) -66*a(n-11) -257*a(n-12) +55*a(n-13) -a(n-14) for n>15

EXAMPLE

Some solutions for 3X6

..0..2..1..4.11..5....1..0..2..3..4..5....0..1..3..2.11..5....1..0..9..2..5..4

..6..7..9..8..3.10....6..7.15.16.17.11...13.14..7..8.17..4....6.14.15.10..3.11

.12.13.14.15.17.16...12.13.14..8..9.10...12..6.15.16..9.10...12.13..7..8.16.17

CROSSREFS

Sequence in context: A328033 A316673 A319509 * A296803 A289225 A331341

Adjacent sequences:  A189443 A189444 A189445 * A189447 A189448 A189449

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 22 2011

STATUS

approved

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Last modified September 26 23:47 EDT 2020. Contains 337378 sequences. (Running on oeis4.)