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A209542 Number of nX7 array permutations with every element making zero or one right-handed knight moves (out 2, right 1) 1
1, 32, 5000, 635040, 42166080, 4045204800, 366400000000, 33556714023168, 3020965716215700, 277531329320894250, 25175937202959450484, 2292630530715092075920, 208706977378379482861824 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A209543

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..29

EXAMPLE

Some solutions for n=4

..0.10.11.12..4..5..6....0.14..2.16.13..5.19....0.14..2..3..4..5..6

..7.21.22.23..2.25.13....7..8.22.23.11..3..4....7..8.22.23.11.25.13

..1.24..3.26.18.19.20....1.24.25.17.18..6.20....1.24.16.26.18.19.20

..8..9.14.15.16.17.27...21..9.10.15.12.26.27...21..9.10.15.12.17.27

CROSSREFS

Sequence in context: A071310 A265371 A232913 * A028461 A240446 A221608

Adjacent sequences:  A209539 A209540 A209541 * A209543 A209544 A209545

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 10 2012

STATUS

approved

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Last modified July 24 18:34 EDT 2021. Contains 346273 sequences. (Running on oeis4.)