A234420 Number of (n+1)X(7+1) 0..7 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1

2094334, 609452862, 184360780592, 57473377454022, 18122285038689252, 5747445821273175392, 1828227876741151008626, 582516650060275178947138, 185790286741345464937151494, 59296242342650026057892424900

Offset

1,1

Comments

Column 7 of A234421

Links

R. H. Hardin, Table of n, a(n) for n = 1..84

Example

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

Crossrefs

Sequence in context: A234469 A212728 A353346 * A115505 A126435 A011571

Adjacent sequences: A234417 A234418 A234419 * A234421 A234422 A234423

Keyword

nonn

Author

R. H. Hardin, Dec 25 2013

Status

approved