A270602 Number of nXnXn triangular 0..4 arrays with some element plus some adjacent element totalling 4+1 or 4-1 exactly once.

0, 36, 1716, 171576, 46957788, 38923001616, 98204118828408, 744477422244654948, 16863964449356423397084, 1140493290200331813320727636, 230373612505462103444572129923504

Offset

1,2

Comments

Column 4 of A270606.

Links

Table of n, a(n) for n=1..11.

Example

Some solutions for n=4
.....0........1........0........0........3........4........4........0
....4.0......1.0......0.2......0.1......1.1......0.0......0.0......0.2
...2.4.4....1.3.1....4.2.0....4.0.3....3.3.4....0.0.0....0.0.2....0.0.2
..3.4.2.0..1.3.1.3..4.0.1.0..4.0.1.3..4.4.3.3..1.2.2.2..0.1.1.0..1.2.0.2

Crossrefs

Cf. A270606.

Sequence in context: A268897 A034996 A166770 * A190918 A356730 A219986

Adjacent sequences: A270599 A270600 A270601 * A270603 A270604 A270605

Keyword

nonn

Author

R. H. Hardin, Mar 20 2016

Status

approved