A270506 Number of nXnXn triangular 0..4 arrays with some element plus some adjacent element totalling 4+1 exactly once.

0, 36, 4584, 1522068, 1489277664, 4560833505432, 44967908021958960, 1450801761221082616968, 154736319577816788156716880, 54932906387551131414935945306700

Offset

1,2

Comments

Column 4 of A270509.

Links

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

Example

Some solutions for n=3
....2......2......0......0......3......1......0......0......4......4......2
...2.2....4.4....4.3....1.2....2.4....3.3....3.4....2.0....2.4....1.0....0.2
..3.1.1..2.0.1..3.4.1..4.0.0..4.4.0..4.1.3..1.2.4..3.0.3..3.4.4..3.3.4..4.0.3

Crossrefs

Cf. A270509.

Sequence in context: A127856 A127860 A189148 * A299698 A203752 A184135

Adjacent sequences: A270503 A270504 A270505 * A270507 A270508 A270509

Keyword

nonn

Author

R. H. Hardin, Mar 18 2016

Status

approved