A235780 Number of (n+1)X(2+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

537, 7331, 86369, 924323, 9324103, 89825051, 837434835, 7600810347, 67576585873, 590517097897, 5088604106025, 43333394608177, 365389038431349, 3055042605688809, 25360445057238525, 209221159123361171

Offset

1,1

Comments

Column 2 of A235784

Links

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

R. H. Hardin, Empirical recurrence of order 59

Formula

Empirical recurrence of order 59 (see link above)

Example

Some solutions for n=3
..2..0..2....0..1..1....2..2..0....1..1..1....1..2..0....1..0..0....2..2..2
..1..2..1....1..1..0....1..2..2....1..2..2....1..0..1....0..2..2....0..1..0
..0..0..2....2..1..2....2..2..2....2..2..2....0..0..0....1..1..1....0..2..2
..0..2..0....1..0..1....2..0..2....1..2..2....1..0..1....2..1..0....2..2..0

Crossrefs

Sequence in context: A236879 A206067 A183725 * A235785 A235561 A252339

Adjacent sequences: A235777 A235778 A235779 * A235781 A235782 A235783

Keyword

nonn

Author

R. H. Hardin, Jan 15 2014

Status

approved