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A271070 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. 1
0, 1, 31, 3192, 688912, 336562064, 385875000312, 1059450143900688, 7053540830611404456, 114825973523109367880880, 4597293982413168923370961064, 454594551827670845887783486952736 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Column 2 of A271075.

LINKS

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

EXAMPLE

Some solutions for n=4

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

....0.0......1.0......1.2......1.0......1.0......1.2......1.1......1.0

...0.1.2....1.1.0....1.1.0....0.1.2....0.0.1....1.0.1....0.2.0....0.2.1

..1.0.0.2..0.2.1.1..0.2.2.2..0.0.0.2..2.0.1.0..1.1.2.2..2.2.2.0..0.2.2.0

CROSSREFS

Cf. A271075.

Sequence in context: A217913 A174584 A276111 * A262926 A218661 A183783

Adjacent sequences:  A271067 A271068 A271069 * A271071 A271072 A271073

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 29 2016

STATUS

approved

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Last modified June 20 05:01 EDT 2019. Contains 324229 sequences. (Running on oeis4.)