A254556 Number of (4+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally

47140, 128366, 380406, 1193965, 3638432, 11160591, 32790229, 92202169, 251677983, 676917833, 1814981434, 4893689293, 13297063017, 36436208384, 100511846076, 278663820410, 775259097470, 2161355734557, 6034365782435

Offset

1,1

Comments

Row 4 of A254553

Links

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

Example

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

Crossrefs

Sequence in context: A206252 A212842 A254549 * A254479 A227710 A215840

Adjacent sequences: A254553 A254554 A254555 * A254557 A254558 A254559

Keyword

nonn

Author

R. H. Hardin, Feb 01 2015

Status

approved