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A250919 Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock having its minimum diagonal element less than its minimum antidiagonal element 0
58, 4148, 1320397, 1887760064, 11784958341212, 326142987792877076, 39794970725248251340754, 21426748780832973687500615661, 50928642492582508852724999569973939 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A250927

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=2

..0..0..2....1..1..1....0..1..1....2..2..0....0..0..2....0..1..2....1..0..2

..2..0..1....2..1..2....0..0..0....2..2..0....0..0..0....0..0..0....1..0..2

..0..0..2....0..1..2....2..2..2....0..1..1....0..2..2....1..2..1....0..0..0

CROSSREFS

Sequence in context: A207474 A207530 A042625 * A282438 A308391 A128934

Adjacent sequences:  A250916 A250917 A250918 * A250920 A250921 A250922

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 28 2014

STATUS

approved

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Last modified November 30 06:28 EST 2021. Contains 349419 sequences. (Running on oeis4.)