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A214346
Number of nXnXn triangular 0..2 arrays with no element lying outside the (possibly reversed) range delimited by its sw and se neighbors
0
3, 17, 169, 2853, 80573, 3778867, 293207907, 37563586269, 7937469117891, 2764964877941141, 1587376056676684453, 1501785457780559131093, 2341332949071519298798233
OFFSET
1,1
COMMENTS
Column 2 of A214352
EXAMPLE
Some solutions for n=3
....2......2......0......1......1......1......1......0......0......2......1
...0.2....2.1....0.2....1.1....1.1....2.1....2.0....2.0....0.1....0.2....1.2
..0.2.1..2.0.1..0.2.2..1.0.1..0.2.1..2.2.1..1.2.0..2.2.0..0.0.2..2.0.2..0.1.2
CROSSREFS
Sequence in context: A268758 A375836 A069856 * A015083 A263460 A053934
KEYWORD
nonn
AUTHOR
R. H. Hardin Jul 13 2012
STATUS
approved