A223631 Number of n X n 0..1 arrays with rows, antidiagonals and columns unimodal.
2, 16, 229, 3712, 61545, 1026377, 17224974, 291563806, 4984273228, 86086143903, 1502219415538
Offset: 1
Keywords
Examples
Some solutions for n=4 ..1..0..0..0....0..1..0..0....0..0..0..0....0..0..1..0....1..1..1..0 ..1..1..1..1....0..0..0..0....1..1..0..0....1..1..1..1....1..1..1..1 ..1..1..1..1....0..0..0..1....1..1..1..1....0..0..1..1....1..1..1..1 ..0..0..0..1....0..0..0..1....0..0..1..1....0..0..0..1....1..1..1..0
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