A253331 Number of (6+1)X(n+1) 0..1 arrays with every 2X2 subblock sum nondecreasing horizontally, vertically and antidiagonally ne-to-sw

1482, 4218, 11795, 34660, 98741, 283804, 797324, 2204476, 6007384, 15848356, 41401573, 103902920, 258879782, 618827506, 1471104195, 3361979592, 7651235093, 16796687840, 36764069159, 77918736420, 164848892230, 339025990414

Offset

1,1

Comments

Row 6 of A253326

Links

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

R. H. Hardin, Empirical recurrence of order 65

Formula

Empirical recurrence of order 65 (see link above)

Example

Some solutions for n=4
..0..0..1..0..0....0..0..0..0..1....0..0..0..0..0....0..0..0..0..1
..0..1..0..1..1....1..0..1..0..0....0..0..0..0..1....1..1..1..1..0
..1..0..1..0..0....0..0..0..1..1....1..0..1..0..1....0..0..0..0..1
..0..1..0..1..1....0..1..1..0..1....1..0..1..0..1....1..1..1..1..0
..1..0..1..0..1....1..0..1..1..1....1..0..1..1..1....0..1..0..1..1
..1..1..1..1..1....1..1..1..1..1....1..1..1..1..1....1..1..1..1..1
..1..1..1..1..1....1..1..1..1..1....0..1..1..1..1....1..0..1..1..1

Crossrefs

Sequence in context: A159719 A052167 A097024 * A158770 A252366 A253324

Adjacent sequences: A253328 A253329 A253330 * A253332 A253333 A253334

Keyword

nonn

Author

R. H. Hardin, Dec 30 2014

Status

approved