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A214347
Number of nXnXn triangular 0..3 arrays with no element lying outside the (possibly reversed) range delimited by its sw and se neighbors
0
4, 36, 660, 23554, 1602092, 205613460, 49555044358, 22380167899116, 18924317057007778, 29956465204908956664, 88786379727557659524194
OFFSET
1,1
COMMENTS
Column 3 of A214352
EXAMPLE
Some solutions for n=3
....0......1......1......0......0......1......2......1......3......2......3
...0.1....3.1....1.2....1.0....1.0....0.3....2.1....3.1....3.2....2.1....3.1
..0.0.3..3.2.1..1.0.2..1.2.0..1.0.1..0.3.3..1.3.1..3.0.2..2.3.0..3.2.0..3.0.2
CROSSREFS
Sequence in context: A135867 A268470 A365650 * A208732 A356616 A029989
KEYWORD
nonn
AUTHOR
R. H. Hardin Jul 13 2012
STATUS
approved