A235668 Number of (4+1)X(n+1) 0..3 arrays with the difference between each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise

344668, 97225212, 25779181084, 6040295484562, 1339343216343068, 277976281746083226, 55242119924026366582, 10527964717485738011446, 1940853801717929483432702, 347172878236877263764212860

Offset

1,1

Comments

Row 4 of A235665

Links

R. H. Hardin, Table of n, a(n) for n = 1..24

Example

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

Crossrefs

Sequence in context: A029568 A235746 A235505 * A235664 A235429 A015321

Adjacent sequences: A235665 A235666 A235667 * A235669 A235670 A235671

Keyword

nonn

Author

R. H. Hardin, Jan 13 2014

Status

approved