A189608 Number of nX7 array permutations with each element not moving, or moving one space E, S or NW.

1, 129, 3248, 108785, 3414588, 107793872, 3394457868, 106717857552, 3352763054744, 105288130659056, 3305643786649888, 103772022994114688, 3257440136563770512, 102248757981895108688, 3209460671164514648880

Offset: 1

Author

R. H. Hardin Apr 24 2011

Keywords

• nonn

Comments

Column 7 of A189610

Examples

			Some solutions for 3X7
..0..1..2..3..4..5..6....0..1.10..2.12..4..6....0..1..2.11..4.13..6
.15..8..9.18.11.20.12....7.16..8..3.11..5.13....7..8.17..3.10..5.12
..7.14.16.10.17.19.13...14.15..9.17.18.19.20...14.15..9.16.18.19.20
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..200