A219710 Number of nX4 arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 nX4 array

20, 125, 1751, 23506, 245205, 2326019, 21036433, 180509639, 1458287494, 11082376729, 79456239834, 539674743558, 3488011587815, 21545098178172, 127698505774282, 728875173290252, 4019100286657877, 21469186347860585

Offset

1,1

Comments

Column 4 of A219714

Links

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

Example

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

Crossrefs

Sequence in context: A250648 A250421 A073968 * A263229 A125330 A126488

Adjacent sequences: A219707 A219708 A219709 * A219711 A219712 A219713

Keyword

nonn

Author

R. H. Hardin Nov 26 2012

Status

approved