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A271243 Number of nXnXn triangular 0..5 arrays with new values introduced in sequential zero-upwards order and exactly one inverted 2x2x2 triangle having values all different. 0
0, 0, 77, 38571, 43105569, 131856310191, 1093512241613007, 24635545692810106290, 1513334529452573133766363 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Column 5 of A271246.

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=4

.....0........0........0........0........0........0........0........0

....1.2......1.1......0.1......1.2......1.1......1.2......1.1......1.0

...1.1.0....2.3.3....0.2.0....1.2.3....2.3.4....2.3.1....1.2.2....2.0.1

..1.0.2.2..1.4.1.4..2.0.2.0..3.1.0.1..2.2.0.1..2.2.3.2..0.3.4.0..0.0.3.1

CROSSREFS

Cf. A271246.

Sequence in context: A266054 A267956 A267910 * A271244 A271245 A196543

Adjacent sequences:  A271240 A271241 A271242 * A271244 A271245 A271246

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 02 2016

STATUS

approved

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Last modified October 28 09:35 EDT 2020. Contains 338052 sequences. (Running on oeis4.)