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A193985 Number of ways to arrange 7 nonattacking triangular rooks on an nXnXn triangular grid 1
0, 0, 0, 0, 0, 0, 0, 0, 0, 28, 4842, 104448, 1127473, 8147469, 44813100, 201616740, 776296572, 2638333236, 8091512680, 22767562704, 59525327634, 146063694310, 339101167392, 749761416480, 1587403977944, 3233026755180, 6358705091310 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,10
COMMENTS
Column 7 of A193986
LINKS
EXAMPLE
Some solutions for 10X10X10
...........0....................0....................0
..........0.0..................0.0..................0.0
.........0.0.0................0.0.0................0.0.0
........1.0.0.0..............0.1.0.0..............0.0.0.1
.......0.0.0.0.1............0.0.0.0.1............0.0.1.0.0
......0.0.0.1.0.0..........1.0.0.0.0.0..........0.1.0.0.0.0
.....0.1.0.0.0.0.0........0.0.1.0.0.0.0........1.0.0.0.0.0.0
....0.0.0.0.0.0.1.0......0.0.0.0.0.0.1.0......0.0.0.0.0.0.1.0
...0.0.1.0.0.0.0.0.0....0.0.0.0.0.1.0.0.0....0.0.0.0.0.1.0.0.0
..0.0.0.0.0.1.0.0.0.0..0.0.0.1.0.0.0.0.0.0..0.0.0.0.1.0.0.0.0.0
CROSSREFS
Sequence in context: A036525 A364516 A355999 * A262018 A131315 A200999
KEYWORD
nonn
AUTHOR
R. H. Hardin Aug 10 2011
STATUS
approved

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Last modified April 23 13:11 EDT 2024. Contains 371913 sequences. (Running on oeis4.)