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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Column 3 of A271194.

LINKS

Table of n, a(n) for n=1..11.

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

Adjacent sequences:  A271186 A271187 A271188 * A271190 A271191 A271192

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 01 2016

STATUS

approved

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Last modified February 27 21:59 EST 2020. Contains 332312 sequences. (Running on oeis4.)