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A189149 Number of nX6 array permutations with each element making zero or one knight moves 0
1, 81, 42689, 20037184, 5025299720 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 6 of A189150

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

Some solutions for 3X6

..0.12.10..3..4.16...13.12..6.16.17..9....8..9..6..3..4.16....0..1.15.11.17..5

..2..7..8.17.14.15...14..7..0..1.10.15...14..7.12.13..2.15...14..7..8.13.10..3

..1.13..6.11..5..9....8..2..3.11..5..4....1..0.10.11..5.17...12..9..6..2.16..4

CROSSREFS

Sequence in context: A017308 A017428 A195274 * A088188 A017560 A128493

Adjacent sequences:  A189146 A189147 A189148 * A189150 A189151 A189152

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 17 2011

STATUS

approved

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Last modified August 12 17:17 EDT 2020. Contains 336439 sequences. (Running on oeis4.)