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A183291 Number of nXnXnXn triangular pyramidal binary arrays with the number of 0-0 adjacencies equal to the number of 0-1 adjacencies 0
2, 5, 75, 29721, 331189203 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

Some solutions for 3X3X3X3

....0......1......0......0......0......1......0......0......1......0......1

...

....0......1......0......0......1......0......0......1......0......0......0

...0.1....0.0....0.0....0.1....0.0....0.0....0.0....0.0....0.1....0.0....0.0

...

....1......0......1......0......0......1......1......0......0......1......0

...0.1....0.1....1.0....0.0....0.0....0.0....0.0....0.0....0.0....1.1....1.0

..0.0.0..0.0.0..1.0.1..1.1.0..0.1.0..1.0.1..1.1.1..1.0.1..0.1.0..0.0.1..0.0.1

CROSSREFS

Sequence in context: A172037 A301993 A128297 * A254405 A216847 A102983

Adjacent sequences:  A183288 A183289 A183290 * A183292 A183293 A183294

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 03 2011

STATUS

approved

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Last modified September 21 01:46 EDT 2021. Contains 347596 sequences. (Running on oeis4.)