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A236147
Number of (n+1)X(n+1) 0..2 arrays colored with the sets of distinct values in every 2X2 subblock
0
81, 2502, 146568, 18147240, 4851646302, 2811658914648, 3534532876367268, 9615988088073831552
OFFSET
1,1
COMMENTS
Diagonal of A236155
EXAMPLE
Some solutions for n=3
..1..2..0..0....1..1..2..2....0..2..0..0....1..2..2..0....1..2..0..1
..2..1..1..1....0..1..0..0....0..2..1..1....0..2..0..1....2..1..0..0
..0..0..1..1....2..1..0..0....2..1..1..1....2..0..1..0....0..0..0..0
..0..0..2..1....2..2..0..2....2..2..0..1....0..1..0..2....0..1..2..0
CROSSREFS
Sequence in context: A205512 A297606 A236729 * A237473 A282995 A295274
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 19 2014
STATUS
approved