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A190937 Number of permutations of n copies of 1..8 introduced in order 1..8 with no element equal to another within a distance of 6 1
1, 160, 27904, 5116416, 970496256, 188745163168, 37428317148293, 7542831976684720, 1541320654071476368, 318820105535954581717, 66668953406861928775959, 14078842985707487656207628 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
EXAMPLE
Some solutions for n=2
..1....1....1....1....1....1....1....1....1....1....1....1....1....1....1....1
..2....2....2....2....2....2....2....2....2....2....2....2....2....2....2....2
..3....3....3....3....3....3....3....3....3....3....3....3....3....3....3....3
..4....4....4....4....4....4....4....4....4....4....4....4....4....4....4....4
..5....5....5....5....5....5....5....5....5....5....5....5....5....5....5....5
..6....6....6....6....6....6....6....6....6....6....6....6....6....6....6....6
..7....7....7....7....7....7....7....7....7....7....7....7....7....7....7....7
..8....1....8....8....1....8....1....1....8....8....8....8....8....8....1....8
..2....8....2....1....8....1....8....8....1....2....1....2....1....1....8....1
..1....2....3....2....3....2....2....2....2....3....3....1....3....2....3....2
..4....4....4....3....2....3....4....3....4....4....2....4....2....4....2....4
..3....5....5....4....5....4....3....5....3....1....5....5....5....5....5....3
..6....3....1....5....6....6....5....4....5....5....4....3....6....3....6....5
..5....6....7....7....4....7....7....6....7....7....7....7....7....6....7....6
..8....7....6....6....7....5....6....7....6....8....8....6....8....7....4....7
..7....8....8....8....8....8....8....8....8....6....6....8....4....8....8....8
CROSSREFS
Sequence in context: A233909 A035825 A183769 * A163056 A091550 A027553
KEYWORD
nonn
AUTHOR
R. H. Hardin May 23 2011
STATUS
approved

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Last modified June 22 09:29 EDT 2024. Contains 373568 sequences. (Running on oeis4.)