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A237027
Number of (n+1)X(n+1) 0..2 arrays with the maximum of every 2X2 subblock equal
1
81, 11205, 11703666, 93104881597, 5114994760537075, 2003793957976560041092, 5504724844486277965571351281, 106840883990714984887612928008269765, 14602647558550285686030851250177063594638018
OFFSET
1,1
COMMENTS
Diagonal of A237035
LINKS
EXAMPLE
Some solutions for n=2
..0..1..1....1..2..0....0..1..2....2..2..0....2..1..0....0..1..0....2..2..0
..1..0..0....1..2..1....0..2..1....2..1..2....1..2..2....2..2..0....2..1..1
..1..0..1....2..1..0....1..0..0....1..0..2....0..1..1....1..2..2....2..1..2
CROSSREFS
Sequence in context: A093281 A059988 A017020 * A185847 A058422 A053913
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 02 2014
STATUS
approved