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A184488
Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock sum greater than 4
1
31, 1983, 421879, 460055427, 2002349014445, 39657122226381527, 3342508236591318287277, 1238778403260497748171275569, 1987238481358577950495683464612101
OFFSET
1,1
COMMENTS
Diagonal of A184497
LINKS
EXAMPLE
Some solutions for 3X3
..2..0..1....2..1..2....1..1..1....0..2..2....0..2..2....2..2..1....0..1..2
..1..2..2....1..2..2....1..2..2....2..2..1....2..1..2....2..1..2....2..2..0
..1..2..0....2..0..1....0..2..2....1..1..1....2..0..2....1..1..2....2..1..2
CROSSREFS
Sequence in context: A131751 A042863 A042860 * A218352 A297549 A292706
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 15 2011
STATUS
approved