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A190834 Number of permutations of 5 copies of 1..n introduced in order 1..n with no element equal to another within a distance of 2 0
0, 0, 1, 15743, 312841383, 10691055854826, 628262652845622327 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

Some solutions for n=4

..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....1....1....4....1....1....4....1....4....1....4....1....4....4....1....4

..2....2....2....1....2....4....2....4....2....4....1....4....1....2....4....2

..1....4....3....2....4....2....1....3....1....3....2....3....2....3....2....1

..4....1....4....4....3....1....4....1....3....2....4....2....3....4....3....4

..2....3....1....3....1....4....3....4....4....4....1....4....4....2....1....3

..3....4....2....2....4....2....2....2....1....1....3....1....2....1....4....1

..4....2....3....1....2....3....4....3....3....2....2....2....1....3....3....2

..1....1....4....4....3....4....1....4....2....3....4....4....4....4....2....4

..3....4....2....3....4....1....3....1....4....1....1....3....3....1....1....3

..4....3....3....2....1....3....2....2....1....2....3....2....1....2....4....1

..1....2....4....1....3....2....4....4....2....4....2....4....2....4....3....4

..3....4....2....3....4....4....1....1....3....3....4....1....3....3....2....3

..2....3....1....4....2....3....3....3....4....1....3....3....4....1....4....2

..4....1....4....2....1....1....4....2....2....4....2....4....2....2....1....4

..3....2....3....3....3....2....1....4....1....2....4....1....1....3....2....3

..1....4....1....1....4....3....3....3....4....3....3....2....3....4....3....2

..2....3....4....4....2....4....2....2....3....4....1....3....4....1....4....1

CROSSREFS

Sequence in context: A298758 A205289 A205897 * A183966 A187031 A233642

Adjacent sequences:  A190831 A190832 A190833 * A190835 A190836 A190837

KEYWORD

nonn

AUTHOR

R. H. Hardin May 21 2011

STATUS

approved

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Last modified August 4 05:02 EDT 2021. Contains 346442 sequences. (Running on oeis4.)