A271433 Number of nXnXn triangular 0..2 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, 864, 41328, 2009952, 116220672, 8608449792, 850781715456, 114969127987200, 21579927922212864, 5686939126548676608, 2120212910213354962944

Offset

1,3

Comments

Column 2 of A271437.

Links

Table of n, a(n) for n=1..13.

Example

Some solutions for n=4
.....0........0........0........0........0........0........0........0
....1.0......1.0......1.1......1.0......0.1......0.0......1.0......1.2
...1.1.1....1.1.0....1.0.2....1.0.1....0.0.2....1.2.2....2.1.0....1.1.2
..1.2.0.1..1.0.1.2..0.0.0.0..2.0.1.1..0.2.0.2..1.2.0.2..0.0.0.0..1.2.2.0

Crossrefs

Cf. A271437.

Sequence in context: A349468 A203410 A275568 * A140412 A276013 A116225

Adjacent sequences: A271430 A271431 A271432 * A271434 A271435 A271436

Keyword

nonn

Author

R. H. Hardin, Apr 07 2016

Status

approved