A237696 Number of (n+1)X(1+1) 0..2 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one

81, 310, 1186, 4700, 18612, 73176, 287924, 1136084, 4482952, 17653056, 69546776, 274191240, 1081253560, 4259811632, 16788534672, 66170693936, 260880060656, 1027965311952, 4051919616000, 15968658702496, 62951672360256

Offset

1,1

Comments

Column 1 of A237703

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=5
..0..0....1..0....2..1....0..2....0..2....1..2....0..2....0..1....0..1....1..2
..0..2....0..1....0..2....1..1....2..0....2..1....1..2....0..0....1..0....2..2
..0..1....0..2....2..0....1..1....1..0....1..0....1..0....0..2....1..1....1..1
..1..2....1..1....1..2....2..1....0..1....2..2....1..1....0..1....0..0....2..1
..2..0....2..2....1..1....0..2....0..2....2..2....2..1....1..0....2..1....2..1
..2..2....2..1....0..1....2..2....0..0....1..1....2..0....1..1....0..1....1..0

Crossrefs

Sequence in context: A237456 A183994 A237703 * A237557 A237550 A237567

Adjacent sequences: A237693 A237694 A237695 * A237697 A237698 A237699

Keyword

nonn

Author

R. H. Hardin, Feb 11 2014

Status

approved