A254807 Number of (4+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally

47816, 132639, 351264, 1075560, 3330874, 11202222, 34896603, 109801804, 322420719, 973698499, 2844922735, 8427616743, 24723378838, 73556785226, 220143127739, 664857332766, 2021448173459, 6171014703674, 18942002139374

Offset

1,1

Comments

Row 4 of A254804

Links

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

Example

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

Crossrefs

Sequence in context: A166003 A221017 A254800 * A253816 A190927 A251455

Adjacent sequences: A254804 A254805 A254806 * A254808 A254809 A254810

Keyword

nonn

Author

R. H. Hardin, Feb 08 2015

Status

approved