A220040 Number of n X 4 arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 n X 4 array.

20, 50, 848, 8337, 74547, 595862, 4640546, 35547836, 263385608, 1857934074, 12439748110, 79439449660, 486913051008, 2878634626483, 16468443715880, 91373937997461, 492567100876598, 2583758599155915, 13206265883717876

Offset

1,1

Comments

Column 4 of A220044.

Links

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

Example

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

Crossrefs

Cf. A220044.

Sequence in context: A331753 A345124 A049390 * A128905 A276135 A350115

Adjacent sequences: A220037 A220038 A220039 * A220041 A220042 A220043

Keyword

nonn

Author

R. H. Hardin, Dec 03 2012

Status

approved