A270255 Number of nXnXn triangular 0..6 arrays with some element plus some adjacent element totalling 6 exactly once.

0, 108, 42750, 51535116, 233617868244, 4283012188676772, 328713317385409802664, 107663927634151968562969608

Offset

1,2

Comments

Column 6 of A270256.

Links

Table of n, a(n) for n=1..8.

Example

Some solutions for n=3
....4......2......3......0......5......6......3......5......4......2......4
...6.0....1.4....6.2....3.5....4.2....1.1....5.3....3.6....6.1....6.4....4.6
..4.4.1..0.1.1..5.1.6..3.6.6..4.3.0..4.2.1..4.0.1..3.6.3..4.2.6..1.6.1..5.2.1

Crossrefs

Cf. A270256.

Sequence in context: A230613 A216592 A202634 * A269269 A230474 A030248

Adjacent sequences: A270252 A270253 A270254 * A270256 A270257 A270258

Keyword

nonn

Author

R. H. Hardin, Mar 14 2016

Status

approved