A217967 Number of 4Xn arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random 0..2 4Xn array

81, 343, 7765, 93765, 1483419, 21409033, 325878175, 4873250877, 73450141827, 1104008971493, 16615223109133, 249949206695547, 3760847564430971, 56583449950921439, 851347218771176575, 12809113773490102743

Offset

1,1

Comments

Row 4 of A217964

Links

R. H. Hardin, Table of n, a(n) for n = 1..21

Example

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

Crossrefs

Sequence in context: A337045 A128607 A180090 * A237384 A237249 A236096

Adjacent sequences: A217964 A217965 A217966 * A217968 A217969 A217970

Keyword

nonn

Author

R. H. Hardin Oct 16 2012

Status

approved