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A251220
Number of (n+1)X(n+1) 0..1 arrays with no 2X2 subblock having the minimum of its diagonal elements greater than the absolute difference of its antidiagonal elements
1
14, 305, 20782, 4462968, 3007738372, 6373427948731, 42432102644410392, 887822645668106069016, 58374742677350528694024651, 12061621459257582136492647314788, 7831831916823870434473136772446378463
OFFSET
1,1
COMMENTS
Diagonal of A251228
LINKS
EXAMPLE
Some solutions for n=3
..1..0..0..1....1..0..1..0....1..1..0..0....0..1..1..0....1..1..1..0
..1..0..0..1....0..0..1..1....0..1..0..1....1..0..1..0....1..0..1..1
..0..0..0..1....0..0..0..0....0..1..1..1....1..1..1..1....0..0..0..1
..0..0..0..0....1..1..0..1....0..0..0..1....0..0..1..0....1..0..1..1
CROSSREFS
Sequence in context: A034834 A276699 A258491 * A205619 A034912 A372350
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 30 2014
STATUS
approved