A219913 Number of n X 6 arrays of the minimum value of corresponding elements and their horizontal, vertical, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 n X 6 array.

21, 21, 308, 2215, 16159, 105936, 715430, 4968426, 34708110, 235821971, 1533422780, 9520703855, 56784842083, 327953470848, 1845044605038, 10141820371575, 54522037417751, 286787858534562, 1477004659546184

Offset

1,1

Comments

Column 6 of A219915.

Links

R. H. Hardin, Table of n, a(n) for n = 1..22

Example

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

Crossrefs

Sequence in context: A220689 A056485 A056475 * A219401 A219449 A165842

Adjacent sequences: A219910 A219911 A219912 * A219914 A219915 A219916

Keyword

nonn

Author

R. H. Hardin, Dec 01 2012

Status

approved