A221925 T(n,k)=Number of nXk arrays of occupancy after each element stays put or moves to some king-move neighbor, without move-in move-out straight through or left turns.

1, 3, 3, 6, 35, 6, 13, 350, 350, 13, 28, 3487, 13228, 3487, 28, 60, 34714, 508281, 508281, 34714, 60, 129, 345744, 19513309, 75313013, 19513309, 345744, 129, 277, 3443699, 749481703, 11143187999, 11143187999, 749481703, 3443699, 277, 595, 34300167

Offset: 1

Author

R. H. Hardin Jan 31 2013

Keywords

• nonn
• tabl

Comments

Table starts

...1.......3.........6..........13..........28............60.........129

...3......35.......350........3487.......34714........345744.....3443699

...6.....350.....13228......508281....19513309.....749481703.28788205897

..13....3487....508281....75313013.11143187999.1648683705320

..28...34714..19513309.11143187999

..60..345744.749481703

.129.3443699

.277

Examples

			Some solutions for n=3 k=4
..0..1..2..0....0..0..2..0....0..3..0..2....0..3..0..1....0..0..0..2
..0..3..0..0....3..0..0..1....0..3..2..0....0..2..0..4....0..3..1..1
..2..1..0..3....0..1..4..1....0..0..0..2....1..0..0..1....0..3..2..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..40

Crossrefs

Column 1 is A002478