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A271244 Number of nXnXn triangular 0..6 arrays with new values introduced in sequential zero-upwards order and exactly one inverted 2x2x2 triangle having values all different. 0
0, 0, 77, 39210, 48347502, 187829420863, 2247557960061633, 79899827658375960942 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
Column 6 of A271246.
LINKS
EXAMPLE
Some solutions for n=4
.....0........0........0........0........0........0........0........0
....1.0......1.2......1.2......1.2......1.2......0.1......1.1......1.0
...2.1.3....0.1.3....3.0.3....0.0.3....3.4.4....2.3.0....1.2.2....1.1.2
..0.1.4.3..3.4.1.5..2.0.0.2..4.3.0.1..1.4.1.3..2.3.3.4..3.4.2.4..3.0.4.1
CROSSREFS
Cf. A271246.
Sequence in context: A267956 A267910 A271243 * A271245 A196543 A201983
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 02 2016
STATUS
approved

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Last modified March 28 17:42 EDT 2024. Contains 371254 sequences. (Running on oeis4.)