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A271190 Number of nXnXn triangular 0..4 arrays with new values introduced in sequential zero-upwards order and exactly one upright 2x2x2 triangle having values all different. 0
0, 1, 72, 10716, 4023409, 3973372776, 10282778195346, 69615227852939489, 1237061064284160182778, 57993308799736991495547414 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Column 4 of A271194.

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=4

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

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

...1.1.0....2.1.2....2.3.1....0.2.1....1.3.2....3.1.1....2.1.0....1.2.3

..2.1.3.2..1.2.2.0..2.0.3.1..0.3.2.2..4.4.3.2..3.3.1.1..1.2.2.1..0.0.2.2

CROSSREFS

Cf. A271194.

Sequence in context: A105347 A093236 A146500 * A271191 A271192 A271193

Adjacent sequences:  A271187 A271188 A271189 * A271191 A271192 A271193

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 01 2016

STATUS

approved

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Last modified August 12 05:33 EDT 2020. Contains 336438 sequences. (Running on oeis4.)