A238033 Number of (n+2)X(2+2) 0..1 arrays with the (lower) medians of each row and column unequal to its neighbors

122, 1004, 6218, 57540, 305978, 3010316, 14910890, 152094052, 724320722, 7559479508, 35151249002, 372487228468, 1705834157786, 18265051952972, 82815310705706, 893143327522980, 4023089695733666, 43605467765614964

Offset

1,1

Comments

Column 2 of A238037

Links

R. H. Hardin, Table of n, a(n) for n = 1..41

Example

Some solutions for n=4
..1..0..1..1....1..0..1..0....1..0..1..1....0..0..0..0....0..1..1..0
..0..1..0..1....0..1..1..1....0..0..1..1....0..1..1..1....1..0..1..1
..1..1..0..1....1..0..0..1....1..1..1..1....1..1..0..0....1..0..0..1
..0..1..0..0....0..1..1..1....0..1..0..0....0..1..1..1....1..0..1..1
..1..1..0..1....1..0..1..0....1..1..0..1....0..1..0..1....0..1..1..0
..0..0..1..1....1..1..1..0....0..1..0..0....1..0..1..1....1..1..1..0

Crossrefs

Sequence in context: A173267 A229722 A092775 * A275181 A275129 A281060

Adjacent sequences: A238030 A238031 A238032 * A238034 A238035 A238036

Keyword

nonn

Author

R. H. Hardin, Feb 17 2014

Status

approved