login
A271189
Number of nXnXn triangular 0..3 arrays with new values introduced in sequential zero-upwards order and exactly one upright 2x2x2 triangle having values all different.
0
0, 1, 72, 9168, 2507552, 1585190304, 2396160624384, 8827783282714112, 80206114652132017152, 1811240213474630551305216, 102217269778272804094166401024
OFFSET
1,3
COMMENTS
Column 3 of A271194.
EXAMPLE
Some solutions for n=4
.....0........0........0........0........0........0........0........0
....0.0......0.1......1.2......1.0......0.0......1.2......1.0......0.1
...0.0.0....2.3.3....1.2.1....2.3.0....1.0.2....1.2.0....2.1.2....1.0.2
..1.2.2.2..2.2.3.2..0.1.1.2..2.3.2.0..1.2.3.3..2.2.0.1..1.2.1.2..3.1.0.0
CROSSREFS
Cf. A271194.
Sequence in context: A119750 A283093 A178635 * A093272 A105347 A093236
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 01 2016
STATUS
approved