A250912 Number of (n+1) X (7+1) 0..2 arrays with no 2 X 2 subblock having its maximum diagonal element less than its minimum antidiagonal element.

21553018, 72721157625, 245114118899485, 826125782084148708, 2784331051704024117237, 9384142308556191112974969, 31627738616791159166366474706, 106596185653227343496197522538691

Offset

1,1

Comments

Column 7 of A250913.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=1
..0..0..0..0..0..0..1..1....0..0..0..0..1..0..0..2....0..0..0..0..0..0..2..2
..0..1..1..2..2..0..2..1....1..0..0..2..2..0..0..0....0..0..1..2..1..0..2..2

Crossrefs

Cf. A250913.

Sequence in context: A253877 A253543 A334372 * A251998 A210389 A364435

Adjacent sequences: A250909 A250910 A250911 * A250913 A250914 A250915

Keyword

nonn

Author

R. H. Hardin, Nov 28 2014

Status

approved