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A253390
Number of (n+1)X(n+1) 0..1 arrays with every 2X2 subblock antidiagonal maximum minus diagonal minimum nondecreasing horizontally and diagonal maximum minus antidiagonal minimum nondecreasing vertically
1
16, 102, 174, 346, 666, 1318, 2726, 5396, 11392, 22634, 47926, 95464, 201644, 402272, 846688, 1690724, 3546388, 7086130, 14818262, 29621624, 61778428, 123532896, 257035176, 514085752, 1067445536, 2135305688, 4425565336, 8853923848
OFFSET
1,1
COMMENTS
Diagonal of A253397
LINKS
EXAMPLE
Some solutions for n=4
..1..0..0..1..1....1..0..1..0..1....0..0..1..0..1....0..1..0..1..1
..0..0..0..1..0....1..0..1..0..1....0..0..1..0..1....1..1..0..1..0
..1..1..0..1..0....1..0..1..0..1....0..0..1..0..1....0..1..0..1..0
..0..1..0..1..0....1..0..1..0..1....1..0..1..0..1....0..1..0..1..0
..0..1..0..1..0....1..0..1..0..1....0..0..1..0..1....0..1..0..1..0
CROSSREFS
Sequence in context: A224155 A224406 A223016 * A264281 A240257 A199773
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 31 2014
STATUS
approved