A219369 Number of nX4 arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..3 nX4 array

20, 193, 4544, 82312, 1205110, 15255786, 174413126, 1833703485, 17851830403, 162110334518, 1382147742410, 11129262089553, 85066986799604, 620037528588182, 4327291721344252, 29022486132474116, 187651131559524364

Offset

1,1

Comments

Column 4 of A219373

Links

R. H. Hardin, Table of n, a(n) for n = 1..90

Example

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

Crossrefs

Sequence in context: A213218 A247742 A355590 * A245137 A232224 A338778

Adjacent sequences: A219366 A219367 A219368 * A219370 A219371 A219372

Keyword

nonn

Author

R. H. Hardin Nov 19 2012

Status

approved