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A250957
Number of (n+1)X(n+1) 0..3 arrays with no 2X2 subblock having its minimum diagonal element less than its minimum antidiagonal element
1
170, 34988, 42534386, 333998523952, 15830978769561242, 4633149318453116653026, 8364724418212952351480546203, 92715859612444518806837176313688042
OFFSET
1,1
COMMENTS
Diagonal of A250965
LINKS
EXAMPLE
Some solutions for n=2
..1..0..0....3..2..0....2..0..0....2..0..0....3..0..0....3..0..2....0..0..0
..1..2..1....3..2..0....3..1..0....3..3..1....2..3..1....2..0..2....3..2..3
..1..1..1....2..2..1....1..3..1....1..1..2....0..1..1....3..0..3....0..1..1
CROSSREFS
Sequence in context: A178499 A133328 A098244 * A114048 A187704 A263059
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 29 2014
STATUS
approved