A270848 Number of nXnXn triangular 0..6 arrays with some element plus some adjacent element totalling 6+1, 6 or 6-1 exactly once.

0, 120, 7344, 1144464, 469037376, 571228600932, 2104222937252028, 23656202572076366346, 813734391998847921799032, 85773404976873204453149343660

Offset

1,2

Comments

Column 6 of A270850.

Links

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

Example

Some solutions for n=3
....1......2......3......3......0......2......3......0......1......6......3
...0.3....2.1....2.0....6.6....0.4....2.6....0.1....3.4....2.3....5.3....4.5
..3.1.2..2.6.2..0.1.3..0.4.5..4.0.1..6.3.5..2.2.6..6.6.4..0.0.1..3.1.1..6.6.3

Crossrefs

Cf. A270850.

Sequence in context: A240934 A035815 A001785 * A223960 A351223 A156411

Adjacent sequences: A270845 A270846 A270847 * A270849 A270850 A270851

Keyword

nonn

Author

R. H. Hardin, Mar 24 2016

Status

approved