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A250906 Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock having its maximum diagonal element less than its minimum antidiagonal element 1
74, 13401, 18077319, 181725094746, 13614176466285177, 7601083164098734394079, 31627738616791159166366474706, 980775577015597559408509097508207843, 226662690545871494601898816284099112431799133 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A250913

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..10

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A107678 A093274 A337406 * A268090 A278378 A324523

Adjacent sequences: A250903 A250904 A250905 * A250907 A250908 A250909

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 28 2014

STATUS

approved

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Last modified March 23 10:25 EDT 2023. Contains 361443 sequences. (Running on oeis4.)