A219474 Number of 4Xn arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..3 4Xn array.

35, 239, 5040, 87083, 1227441, 14696377, 157191488, 1532762665, 13807624794, 116296337706, 924459750842, 6973773054426, 50113925911679, 344224992704591, 2267656840216326, 14372813464098494, 87897599949502791, 519959958984757538

Offset: 1

Author

R. H. Hardin Nov 20 2012

Keywords

• nonn

Comments

Row 4 of A219471

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..92