A220016 Number of 7Xn arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 7Xn array.

84, 637, 32575, 1209492, 45252407, 1728522691

Offset

1,1

Comments

Row 7 of A220010

Links

Table of n, a(n) for n=1..6.

Example

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

Crossrefs

Sequence in context: A238518 A264654 A230907 * A219827 A219719 A069080

Adjacent sequences: A220013 A220014 A220015 * A220017 A220018 A220019

Keyword

nonn

Author

R. H. Hardin, Dec 03 2012

Status

approved