A219938 Number of nX7 arrays of the minimum value of corresponding elements and their horizontal or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 nX7 array

84, 1660, 100761, 9073439, 871084602

Offset

1,1

Comments

Column 7 of A219939

Links

Table of n, a(n) for n=1..5.

Example

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

Crossrefs

Sequence in context: A008359 A359934 A166847 * A271670 A358864 A098935

Adjacent sequences: A219935 A219936 A219937 * A219939 A219940 A219941

Keyword

nonn

Author

R. H. Hardin Dec 01 2012

Status

approved