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A250460 Number of (n+1)X(n+1) 0..1 arrays with nondecreasing min(x(i,j),x(i,j-1)) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction 1
11, 134, 3476, 204721, 27076065, 8093522514, 5462124226322, 8328699777016744, 28688178263528167112, 223246538149490827371276, 3924702068331178468638788526, 155874997244516815039571897178325 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A250468

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..20

EXAMPLE

Some solutions for n=3

..0..0..0..0....0..0..0..0....0..1..0..0....0..0..1..0....1..0..0..0

..0..0..1..0....1..0..1..1....0..0..0..0....1..0..0..0....0..1..0..0

..1..0..0..1....0..0..1..1....1..0..0..0....0..1..0..0....1..0..0..0

..0..0..0..1....0..0..1..1....0..0..0..0....0..0..0..0....0..1..0..1

CROSSREFS

Sequence in context: A051431 A014994 A015609 * A157773 A336180 A209487

Adjacent sequences:  A250457 A250458 A250459 * A250461 A250462 A250463

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 23 2014

STATUS

approved

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Last modified November 27 16:35 EST 2021. Contains 349394 sequences. (Running on oeis4.)