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A251202
Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock summing to a nonzero multiple of 2
1
40, 1246, 102811, 27920380, 29868134632, 129855805888645, 2203266860629332142, 141756509654699247308602, 34090982077422268972865847281, 30409612013209091174685207093821492
OFFSET
1,1
COMMENTS
Diagonal of A251210
LINKS
EXAMPLE
Some solutions for n=3
..2..2..0..2....0..2..2..2....2..2..0..0....1..2..2..1....0..0..0..1
..0..2..2..2....2..0..0..2....0..0..2..0....1..2..0..1....2..2..0..1
..0..2..2..0....0..0..2..2....0..2..0..2....0..1..1..0....0..2..2..1
..0..2..2..2....0..2..0..0....0..0..0..2....2..1..1..2....0..2..2..1
CROSSREFS
Sequence in context: A061650 A006101 A278381 * A239189 A188253 A049396
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 30 2014
STATUS
approved