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A211902 Number of triangular nXnXn arrays colored with integers 0 upwards introduced in row major order, with no element equal to any neighbor, and containing the value n(n+1)/2-5 0
0, 0, 15, 2605, 336017, 12353030, 212518051, 2254248571, 17095114982 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Column 4 of A211904

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=4

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

....1.2......1.2......1.2......1.2......1.2......1.2......1.2......1.2

...3.0.3....0.3.4....3.4.3....3.4.0....3.4.0....3.4.3....3.4.0....3.4.3

..4.2.5.0..3.1.5.6..5.0.2.5..5.0.5.2..2.0.2.5..2.5.2.5..0.5.3.4..0.2.5.2

CROSSREFS

Sequence in context: A266571 A308389 A278410 * A200797 A241116 A126678

Adjacent sequences:  A211899 A211900 A211901 * A211903 A211904 A211905

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 25 2012

STATUS

approved

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Last modified July 1 10:54 EDT 2022. Contains 354972 sequences. (Running on oeis4.)