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A214346 Number of nXnXn triangular 0..2 arrays with no element lying outside the (possibly reversed) range delimited by its sw and se neighbors 0
3, 17, 169, 2853, 80573, 3778867, 293207907, 37563586269, 7937469117891, 2764964877941141, 1587376056676684453, 1501785457780559131093, 2341332949071519298798233 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A214352

LINKS

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

EXAMPLE

Some solutions for n=3

....2......2......0......1......1......1......1......0......0......2......1

...0.2....2.1....0.2....1.1....1.1....2.1....2.0....2.0....0.1....0.2....1.2

..0.2.1..2.0.1..0.2.2..1.0.1..0.2.1..2.2.1..1.2.0..2.2.0..0.0.2..2.0.2..0.1.2

CROSSREFS

Sequence in context: A052143 A268758 A069856 * A015083 A263460 A053934

Adjacent sequences:  A214343 A214344 A214345 * A214347 A214348 A214349

KEYWORD

nonn

AUTHOR

R. H. Hardin Jul 13 2012

STATUS

approved

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Last modified August 3 08:53 EDT 2020. Contains 336197 sequences. (Running on oeis4.)