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A163887 Number of nXnXn triangular binary arrays with all 1s connected, no 1 having more than 5 1s adjacent, and all vertexes 1 0
1, 1, 4, 36, 684, 26786, 2120048, 335831258, 105871755544, 66181902287654 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
LINKS
EXAMPLE
All solutions for n=4
.....1........1........1........1........1........1........1........1...
....1.1......1.1......1.1......1.1......1.1......1.1......1.1......0.1..
...1.0.1....1.1.1....1.0.1....1.1.1....1.0.1....1.1.1....1.0.1....1.1.1.
..1.0.0.1..1.0.0.1..1.0.1.1..1.0.1.1..1.1.0.1..1.1.0.1..1.1.1.1..1.0.0.1
------
.....1........1........1........1........1........1........1........1...
....0.1......0.1......0.1......0.1......1.1......0.1......1.1......0.1..
...1.1.1....1.1.1....1.1.1....1.1.0....1.1.0....1.1.0....1.1.0....0.1.1.
..1.0.1.1..1.1.0.1..1.1.1.1..1.0.1.1..1.0.1.1..1.1.1.1..1.1.1.1..1.1.0.1
------
.....1........1........1........1........1........1........1........1...
....1.1......0.1......1.1......0.1......1.1......1.0......1.0......1.0..
...0.1.1....0.1.1....0.1.1....0.1.0....0.1.0....1.1.1....1.1.1....1.1.1.
..1.1.0.1..1.1.1.1..1.1.1.1..1.1.1.1..1.1.1.1..1.0.0.1..1.0.1.1..1.1.0.1
------
.....1........1........1........1........1........1........1........1...
....1.0......1.0......1.0......1.0......1.0......1.0......0.1......0.1..
...1.1.1....1.1.0....1.1.0....0.1.1....0.1.1....0.1.0....0.0.1....1.0.1.
..1.1.1.1..1.0.1.1..1.1.1.1..1.1.0.1..1.1.1.1..1.1.1.1..1.1.1.1..1.1.1.1
------
.....1........1........1........1...
....1.1......1.0......1.1......1.0..
...0.0.1....1.0.0....1.0.0....1.0.1.
..1.1.1.1..1.1.1.1..1.1.1.1..1.1.1.1
CROSSREFS
Sequence in context: A208732 A356616 A029989 * A156630 A289545 A322782
KEYWORD
nonn
AUTHOR
R. H. Hardin Aug 06 2009
STATUS
approved

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Last modified June 9 02:17 EDT 2024. Contains 373227 sequences. (Running on oeis4.)