A251316 Number of (n+1)X(7+1) 0..1 arrays with no 2X2 subblock having the maximum of its diagonal elements greater than the absolute difference of its antidiagonal elements

2189, 20484, 186162, 1720147, 16024915, 149982413, 1401489913, 13088358653, 122472226217, 1147464543755, 10745979550709, 100582710069148, 941698101355544, 8820201458359056, 82614010198580274, 773674969786165964

Offset

1,1

Comments

Column 7 of A251317

Links

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

R. H. Hardin, Empirical recurrence of order 68

Formula

Empirical recurrence of order 68 (see link above)

Example

Some solutions for n=3
..0..1..0..0..0..1..1..0....1..1..0..0..1..1..0..1....0..0..0..1..0..0..0..1
..0..1..1..0..0..0..1..0....0..1..0..0..0..1..0..0....0..0..0..1..1..0..0..1
..0..0..1..0..0..0..1..0....0..1..1..1..0..1..1..0....1..0..0..0..1..0..0..0
..0..0..1..0..0..0..1..0....0..0..0..1..0..0..1..1....1..1..1..0..1..0..0..0

Crossrefs

Sequence in context: A081865 A085442 A208549 * A320718 A134158 A227488

Adjacent sequences: A251313 A251314 A251315 * A251317 A251318 A251319

Keyword

nonn

Author

R. H. Hardin, Dec 01 2014

Status

approved