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A251058 Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock having x11-x00 less than x10-x01 0
50, 2740, 320950, 71431719, 26192388204, 14586457826568, 11583623256480548, 12514359896491286169, 17723892558531981314400 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A251065

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A042201 A097838 A203842 * A239653 A223661 A224111

Adjacent sequences:  A251055 A251056 A251057 * A251059 A251060 A251061

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 29 2014

STATUS

approved

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Last modified July 2 21:48 EDT 2022. Contains 355029 sequences. (Running on oeis4.)