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A270604
Number of nXnXn triangular 0..6 arrays with some element plus some adjacent element totalling 6+1 or 6-1 exactly once.
0
0, 120, 23448, 13177740, 25162747992, 176610474548304, 4757551848002860896, 504235830402554520290820, 213082697840230591135069403580
OFFSET
1,2
COMMENTS
Column 6 of A270606.
EXAMPLE
Some solutions for n=3
....4......3......6......5......0......1......2......5......6......1......2
...5.4....6.2....6.6....3.5....0.3....0.3....3.6....4.6....3.0....6.0....4.0
..1.4.6..4.6.4..3.2.0..2.6.5..2.3.6..0.2.6..0.0.4..5.2.6..1.2.2..6.4.2..2.6.1
CROSSREFS
Cf. A270606.
Sequence in context: A229693 A105188 A264957 * A151604 A104008 A278726
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 20 2016
STATUS
approved