login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A188981 T(n,k)=Number of nXk array permutations with each element moved but moved no more than a city block distance of two 6
0, 1, 1, 2, 9, 2, 4, 116, 116, 4, 6, 900, 7264, 900, 6, 13, 7836, 295264, 295264, 7836, 13, 24, 71865, 12838276, 54113236, 12838276, 71865, 24, 45, 640513, 577290185, 10523263424, 10523263424, 577290185, 640513, 45, 84, 5706113, 25631148992 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Table starts

...0........1.............2...............4................6...............13

...1........9...........116.............900.............7836............71865

...2......116..........7264..........295264.........12838276........577290185

...4......900........295264........54113236......10523263424....2184414516364

...6.....7836......12838276.....10523263424....9562891914304.9298230791255360

..13....71865.....577290185...2184414516364.9298230791255360

..24...640513...25631148992.446454227170968

..45..5706113.1136766429824

..84.51056136

.160

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..59

EXAMPLE

Some solutions for 5X3

..1..0..4....1..0..4....1..0..4....1..0..4....1..0..4....1..0..4....1..0..4

..6..2.11....5..6..7....6..8..2....6..8..2....5..3.11....6..5..8....5..2..3

.12..3..5...12..3..2....3.11.14...12..9..5....8.10..2....9..3..2....8.10.14

.13..9..7...11.13..9...13.12..5....3..7.10...13..7..9...10.14..7...11..6.13

.14.10..8...14.10..8....9..7.10...14.11.13....6.14.12...13.12.11....9..7.12

CROSSREFS

Column 1 is A033305

Sequence in context: A248695 A221139 A217273 * A277754 A112537 A165715

Adjacent sequences:  A188978 A188979 A188980 * A188982 A188983 A188984

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Apr 14 2011

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 26 20:34 EDT 2021. Contains 347672 sequences. (Running on oeis4.)