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A251309 Number of (n+1)X(n+1) 0..1 arrays with no 2X2 subblock having the maximum of its diagonal elements greater than the absolute difference of its antidiagonal elements 1
10, 79, 890, 16006, 451826, 20080487, 1401489913, 153420339471, 26520184876394, 7212082506701341, 3095565630909130451, 2090970229906057682594, 2228353475131985328672710, 3744199174821109524081657694 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A251317

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..19

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A006329 A077245 A036732 * A206764 A253649 A244729

Adjacent sequences:  A251306 A251307 A251308 * A251310 A251311 A251312

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 01 2014

STATUS

approved

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Last modified December 15 20:00 EST 2019. Contains 330000 sequences. (Running on oeis4.)