A235561 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 rowwise and columnwise

537, 8345, 113391, 1383617, 15633605, 165947729, 1680360507, 16368643767, 154629524369, 1423864504941, 12838948846501, 113734761931057, 992623171694623, 8553532264219381, 72908918920145825, 615658688491607859

Offset

1,1

Comments

Column 2 of A235565

Links

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

R. H. Hardin, Empirical recurrence of order 67

Formula

Empirical recurrence of order 67 (see link above)

Example

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

Crossrefs

Sequence in context: A183725 A235780 A235785 * A252339 A224742 A231194

Adjacent sequences: A235558 A235559 A235560 * A235562 A235563 A235564

Keyword

nonn

Author

R. H. Hardin, Jan 12 2014

Status

approved