A253374 Number of (n+1)X(7+1) 0..2 arrays with every 2X2 subblock sum nondecreasing horizontally, vertically and antidiagonally ne-to-sw.

751689, 27587386, 912012350, 8129400162, 90160819133, 395423995297, 2328730657618, 7268309821982, 30358932724029, 80127971130743, 277035286072420, 673287348628358, 2096912690843655, 4920343202272054

Offset

1,1

Comments

Column 7 of A253375

Links

Table of n, a(n) for n=1..14.

Example

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

Crossrefs

Sequence in context: A206675 A205519 A166001 * A204229 A290161 A244308

Adjacent sequences: A253371 A253372 A253373 * A253375 A253376 A253377

Keyword

nonn

Author

R. H. Hardin, Dec 30 2014

Status

approved