A219456 Number of nX4 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 columns, 0..3 nX4 array

20, 26, 498, 3422, 27967, 197308, 1324860, 8405212, 51417327, 303703636, 1731421125, 9525742325, 50654533963, 260914306516, 1304341448963, 6337774514024, 29964888604613, 137989085373438, 619551753355165

Offset

1,1

Comments

Column 4 of A219460

Links

R. H. Hardin, Table of n, a(n) for n = 1..47

Example

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

Crossrefs

Sequence in context: A280307 A101070 A219805 * A248787 A070717 A114813

Adjacent sequences: A219453 A219454 A219455 * A219457 A219458 A219459

Keyword

nonn

Author

R. H. Hardin Nov 20 2012

Status

approved