A217957 Number of n X n arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random 0..2 n X n array

3, 17, 835, 93765, 48942485, 87208470529, 607719550822787, 15846548046182210151, 1544189902342193283030363, 568409335593102223136171917295

Offset

1,1

Comments

Diagonal of A217964

Links

Table of n, a(n) for n=1..10.

Example

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

Crossrefs

Sequence in context: A126579 A309060 A270816 * A252730 A362647 A225728

Adjacent sequences: A217954 A217955 A217956 * A217958 A217959 A217960

Keyword

nonn

Author

R. H. Hardin Oct 16 2012

Status

approved