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A233627
Number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 6
0
100, 10544, 4350820, 8271515976, 70397790661236, 2773481533459095728, 503834532970292342872224, 424823535145734004788702590284
OFFSET
1,1
COMMENTS
Diagonal of A233635
EXAMPLE
Some solutions for n=2
..3..1..1....3..2..3....3..0..1....3..1..3....2..3..2....1..2..2....1..0..0
..2..3..0....2..0..2....3..3..1....0..0..1....0..0..1....0..3..0....3..0..3
..2..0..0....0..1..0....1..0..1....2..3..2....0..3..3....0..2..1....2..0..2
CROSSREFS
Sequence in context: A267523 A027576 A099374 * A163663 A272681 A267674
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 14 2013
STATUS
approved