A237937 Number of (n+1)X(n+1) 0..2 arrays with the maximum minus the minimum of every 2X2 subblock equal

81, 5519, 2020033, 4202495253, 43830625875881, 2286487486628925039, 588945572180874908222729, 750899466581610572275099099051, 4734118942676314823884430739438571861

Offset

1,1

Comments

Diagonal of A237945

Links

Table of n, a(n) for n=1..9.

Example

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

Crossrefs

Sequence in context: A238172 A260858 A237300 * A060349 A212706 A036354

Adjacent sequences: A237934 A237935 A237936 * A237938 A237939 A237940

Keyword

nonn

Author

R. H. Hardin, Feb 16 2014

Status

approved