A220197 - OEIS

A220197

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

4, 10, 238, 6855, 527350, 154837661

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OFFSET

1,1

COMMENTS

Diagonal of A220204

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

Some solutions for n=3

..0..0..0....0..0..0....0..0..0....0..0..0....1..0..0....3..0..0....0..0..0

..2..0..0....1..0..0....2..0..0....1..0..0....2..1..0....3..1..0....1..0..0

..3..3..1....3..1..0....2..1..0....3..3..2....2..2..1....3..3..1....1..1..3

CROSSREFS

Sequence in context: A003086 A102958 A321795 * A299880 A358928 A085649

Adjacent sequences: A220194 A220195 A220196 * A220198 A220199 A220200

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 07 2012

STATUS

approved