A189648 Number of nX7 array permutations with each element moving zero or one space horizontally, diagonally or antidiagonally

21, 24577, 11047585, 6156828073, 3292827578005, 1778231752192145, 958681588788944613, 517069529154777840681, 278864582730126081862829, 150399411952876520217908417, 81114338143785708962035111845

Offset

1,1

Comments

Column 7 of A189650

Links

R. H. Hardin, Table of n, a(n) for n = 1..78

Example

Some solutions for 3X7
..0..7..2..4..3..5.12....0..7.10..2..3..6..5....0..2..3..9..5..4..6
..1..9.15.10.11..6.13....1..9.15.11.19..4.12....1.14.15.10.12.11.19
..8.14.16.17.18.20.19....8.14.16.17.18.13.20....8..7.16.18.17.13.20

Crossrefs

Sequence in context: A001167 A250066 A299035 * A351804 A283841 A100414

Adjacent sequences: A189645 A189646 A189647 * A189649 A189650 A189651

Keyword

nonn

Author

R. H. Hardin Apr 24 2011

Status

approved