A219467 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 columns, 0..3 nX4 array.

20, 211, 4838, 87083, 1306891, 17399442, 208345624, 2285009931, 23253970439, 221258732227, 1979908560027, 16752069750566, 134676183213583, 1033204910207865, 7592661274649504, 53621665489883610, 364978798507011324

Offset: 1

Author

R. H. Hardin Nov 20 2012

Keywords

• nonn

Comments

Column 4 of A219471

Examples

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

Links

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