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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 * A372482 A254405 A216847
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 November 7 12:11 EST 2024. Contains 377535 sequences.
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