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A206247
Number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock having zero permanent
1
49, 8029, 1364224, 4556324929, 14139111560401, 848170637644693504, 48673249000646115009649, 50198078741005740094898080285, 52964434709981480280861081128206336
OFFSET
1,1
COMMENTS
Diagonal of A206255
LINKS
EXAMPLE
Some solutions for n=4
..3..3..0..1..0....1..2..3..2..2....3..3..2..1..3....0..0..3..1..3
..0..0..0..1..0....0..0..0..0..0....0..0..0..0..0....3..0..0..0..0
..3..2..0..3..0....2..1..3..2..1....1..0..2..0..1....2..0..3..0..1
..0..0..0..1..0....0..0..0..0..0....1..0..1..0..2....3..0..0..0..3
..2..3..0..1..0....1..0..3..3..3....2..0..1..0..3....3..0..3..0..0
CROSSREFS
Sequence in context: A006692 A304313 A283788 * A180273 A351598 A014801
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 05 2012
STATUS
approved