A203885 Number of (n+1)X7 0..6 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements

236513641, 195759462871, 209668438383145, 247090069595954263, 300614697430789927465

Offset

1,1

Comments

Column 6 of A203887

Links

Table of n, a(n) for n=1..5.

Example

Some solutions for n=4
..3..0..2..2..0..0..3....4..0..1..1..5..3..3....3..4..0..3..3..1..2
..4..3..0..2..2..0..0....0..5..0..1..1..5..3....2..3..4..0..3..3..1
..5..4..3..0..2..2..0....3..0..3..0..1..1..5....3..1..3..4..0..3..3
..2..5..4..3..0..2..2....1..3..4..3..0..1..1....4..3..4..2..4..0..3
..4..2..5..4..3..0..2....1..1..3..5..3..0..1....0..4..5..4..0..6..0

Crossrefs

Sequence in context: A322061 A029831 A289981 * A335591 A234058 A353554

Adjacent sequences: A203882 A203883 A203884 * A203886 A203887 A203888

Keyword

nonn

Author

R. H. Hardin Jan 07 2012

Status

approved