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A190832 Number of permutations of 4 copies of 1..n introduced in order 1..n with no element equal to another within a distance of 3 0
0, 0, 0, 1, 9993, 44288275, 216956034178, 1368009041285362 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=5

..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....1....5....5....5....5....1....5

..1....1....2....1....1....1....1....2....1....5....2....2....2....1....5....1

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

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

..3....4....5....3....5....4....2....4....5....4....5....3....1....3....2....2

..1....5....4....1....3....5....1....2....4....5....1....2....2....5....1....5

..2....1....1....5....2....3....3....5....3....1....3....5....3....2....5....1

..5....3....2....4....4....2....5....1....1....2....4....1....5....1....4....4

..3....2....3....2....1....1....2....4....2....4....5....4....4....3....3....2

..4....5....4....3....5....5....4....3....4....3....1....3....2....5....2....3

..1....4....5....5....3....4....3....5....5....5....3....5....1....2....5....5

..5....3....2....1....4....2....5....2....1....1....2....1....5....4....1....4

..3....1....3....4....2....1....1....1....2....4....5....4....3....1....4....1

..2....5....1....3....5....3....4....4....4....3....4....2....4....3....3....2

..4....2....4....2....1....4....2....5....5....5....1....3....1....5....2....5

..5....4....5....5....3....5....5....3....3....2....2....5....5....4....5....3

CROSSREFS

Sequence in context: A182696 A126978 A188790 * A043528 A089521 A084474

Adjacent sequences:  A190829 A190830 A190831 * A190833 A190834 A190835

KEYWORD

nonn

AUTHOR

R. H. Hardin May 21 2011

STATUS

approved

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Last modified September 26 16:43 EDT 2020. Contains 337374 sequences. (Running on oeis4.)