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A179959 Number of permutations of 1..n with no adjacent elements within 5 in value. 1
1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 352, 24440, 1019616, 33461568, 957913824, 25415753280, 649347224736, 16370397635328 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,13

LINKS

Table of n, a(n) for n=0..20.

CROSSREFS

Sequence in context: A063831 A216356 A064023 * A024350 A012669 A278926

Adjacent sequences:  A179956 A179957 A179958 * A179960 A179961 A179962

KEYWORD

nonn

AUTHOR

R. H. Hardin, Aug 03 2010

EXTENSIONS

a(0)-a(10), a(20) from Alois P. Heinz, Oct 27 2014

STATUS

approved

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Last modified April 3 12:37 EDT 2020. Contains 333197 sequences. (Running on oeis4.)