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A237937
Number of (n+1)X(n+1) 0..2 arrays with the maximum minus the minimum of every 2X2 subblock equal
0
81, 5519, 2020033, 4202495253, 43830625875881, 2286487486628925039, 588945572180874908222729, 750899466581610572275099099051, 4734118942676314823884430739438571861
OFFSET
1,1
COMMENTS
Diagonal of A237945
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 16 2014
STATUS
approved