A220152 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..2 nX7 array

28, 197, 2841, 53947, 1272216, 32566283, 822242009, 19788620178, 451988194616, 9825625746882, 204030760833450, 4061291243187050, 77745303520858839, 1435301691794275091

Offset

1,1

Comments

Column 7 of A220153

Links

Table of n, a(n) for n=1..14.

Example

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

Crossrefs

Sequence in context: A079903 A167581 A135826 * A042526 A184933 A233039

Adjacent sequences: A220149 A220150 A220151 * A220153 A220154 A220155

Keyword

nonn

Author

R. H. Hardin Dec 06 2012

Status

approved