A270847 Number of nXnXn triangular 0..5 arrays with some element plus some adjacent element totalling 5+1, 5 or 5-1 exactly once.

0, 66, 1650, 108348, 15754872, 5805948474, 5281372355106, 11945149897295976, 67197347870563441956, 942226132122315020612652, 32978490136427533663379223282, 2885163807024594872443402033028412

Offset

1,2

Comments

Column 5 of A270850.

Links

Table of n, a(n) for n=1..12.

Example

Some solutions for n=4
.....4........2........0........0........2........3........0........4
....0.3......0.2......0.3......3.0......0.1......4.3......3.5......5.3
...1.0.0....0.0.0....1.0.2....0.0.2....2.1.0....3.4.5....5.5.4....3.4.4
..0.1.1.0..2.1.0.2..0.0.1.1..3.3.0.0..2.0.2.1..4.4.3.5..4.3.5.5..2.5.3.5

Crossrefs

Cf. A270850.

Sequence in context: A269498 A133318 A197645 * A140925 A269779 A279446

Adjacent sequences: A270844 A270845 A270846 * A270848 A270849 A270850

Keyword

nonn

Author

R. H. Hardin, Mar 24 2016

Status

approved