A235786 Number of (3+1)X(n+1) 0..2 arrays with the difference of the upper and lower median value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise

3199, 86369, 1998795, 40810011, 775083193, 13779480739, 234239906977, 3826967361207, 60695780199313, 938335707129523, 14215200297894007, 211669896956361765, 3107619805369124633, 45081219344278229115

Offset

1,1

Comments

Row 3 of A235784

Links

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

Example

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

Crossrefs

Sequence in context: A225056 A306197 A211840 * A235781 A235562 A269114

Adjacent sequences: A235783 A235784 A235785 * A235787 A235788 A235789

Keyword

nonn

Author

R. H. Hardin, Jan 15 2014

Status

approved