A271434 Number of nXnXn triangular 0..3 arrays with new values introduced in sequential zero-upwards order and exactly one 2x2x2 triangle having values all equal and exactly one 2x2x2 triangle having values all different.

0, 0, 12, 1503, 114696, 8913024, 847131696, 107419889151, 19047514016106, 4855914055193274, 1811510852881383396

Offset

1,3

Comments

Column 3 of A271437.

Links

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

Example

Some solutions for n=4
.....0........0........0........0........0........0........0........0
....1.0......1.1......1.1......1.0......1.1......1.1......1.1......1.0
...2.1.1....1.2.1....2.1.2....1.1.2....2.1.3....2.1.3....0.1.2....1.0.1
..3.3.1.3..2.2.2.0..3.3.1.1..3.3.1.1..2.3.3.0..1.2.3.2..2.2.1.2..0.0.0.2

Crossrefs

Cf. A271437.

Sequence in context: A160490 A276905 A015096 * A299694 A366832 A160237

Adjacent sequences: A271431 A271432 A271433 * A271435 A271436 A271437

Keyword

nonn

Author

R. H. Hardin, Apr 07 2016

Status

approved