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A188962
T(n,k)=Number of nXk array permutations with each element moved by a city block distance of no more than three
4
1, 2, 2, 6, 24, 6, 24, 720, 720, 24, 78, 24024, 229080, 24024, 78, 230, 570050, 75764664, 75764664, 570050, 230, 675, 12702057, 17316382188, 251096032912, 17316382188, 12702057, 675, 2069, 298167456, 3909049448304, 573780546403024
OFFSET
1,2
COMMENTS
Table starts
....1.........2.............6..............24..............78...........230
....2........24...........720...........24024..........570050......12702057
....6.......720........229080........75764664.....17316382188.3909049448304
...24.....24024......75764664....251096032912.573780546403024
...78....570050...17316382188.573780546403024
..230..12702057.3909049448304
..675.298167456
.2069
LINKS
EXAMPLE
Some solutions for 5X3
..0..5..1....0..5..1....0..5..1....0..5..1....0..5..1....0..5..1....0..5..1
..6..3.10....6..3.10....6..3.10....6..3..7....6..3..7....6..3..7....6..3..7
..7..2.14...13..7.11....9.14..7....8..2.13...10..2.11....4.14..2...11.13..2
.11..4..9....8..4..2....8..4..2...14..4..9...13..8..4....8..9.10...14..4.10
.13..8.12...12.14..9...13.11.12...11.12.10...12.14..9...11.13.12...12..9..8
CROSSREFS
Column 1 is A002526
Sequence in context: A141902 A069466 A143084 * A076741 A320603 A276409
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Apr 14 2011
STATUS
approved