A271435 - OEIS

A271435

Number of nXnXn triangular 0..4 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, 1620, 148392, 14979216, 1978392960, 370450049664, 102638643985920, 43175669754811392

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OFFSET

1,3

COMMENTS

Column 4 of A271437.

LINKS

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

EXAMPLE

Some solutions for n=4

.....0........0........0........0........0........0........0........0

....1.0......1.0......1.1......1.0......1.1......1.1......0.1......1.0

...1.1.1....2.2.2....2.2.2....2.2.2....2.0.0....0.2.1....2.2.2....2.1.0

..2.3.3.1..0.0.2.3..0.3.2.4..2.0.2.0..0.2.0.3..0.0.2.2..1.2.3.3..0.1.0.0

CROSSREFS

Cf. A271437.

Sequence in context: A013515 A159383 A015011 * A271436 A034280 A146201

Adjacent sequences: A271432 A271433 A271434 * A271436 A271437 A271438

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 07 2016

STATUS

approved