A193124 Number of n X n symmetric 0..7 arrays with each element equal to the sum mod 8 of two of its horizontal and vertical neighbors

0, 1, 41, 2849, 731987, 1412507142

Offset

1,3

Links

Table of n, a(n) for n=1..6.

Example

Some solutions for 4X4
..4..6..3..7....0..4..6..2....0..4..7..5....6..3..5..6....0..4..2..1
..6..2..4..4....4..6..2..4....4..4..2..6....3..6..2..1....4..4..6..7
..3..4..1..5....6..2..0..0....7..2..6..4....5..2..4..7....2..6..4..3
..7..4..5..2....2..4..0..0....5..6..4..0....6..1..7..6....1..7..3..6

Crossrefs

Sequence in context: A223384 A211907 A291860 * A223004 A275093 A275349

Adjacent sequences: A193121 A193122 A193123 * A193125 A193126 A193127

Keyword

nonn

Author

R. H. Hardin Jul 16 2011

Status

approved