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A253374 Number of (n+1)X(7+1) 0..2 arrays with every 2X2 subblock sum nondecreasing horizontally, vertically and antidiagonally ne-to-sw 0
751689, 27587386, 912012350, 8129400162, 90160819133, 395423995297, 2328730657618, 7268309821982, 30358932724029, 80127971130743, 277035286072420, 673287348628358, 2096912690843655, 4920343202272054 (list; graph; refs; listen; history; text; internal format)
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

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Last modified June 14 05:08 EDT 2021. Contains 345018 sequences. (Running on oeis4.)