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

1,2

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

Links

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

Example

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

Crossrefs

Column 1 is A002478

Sequence in context: A221898 A103895 A221886 * A221688 A366820 A066358

Adjacent sequences: A221922 A221923 A221924 * A221926 A221927 A221928

Keyword

nonn,tabl

Author

R. H. Hardin Jan 31 2013

Status

approved