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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: A216356 A064023 A370483 * 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 May 13 12:32 EDT 2024. Contains 372519 sequences. (Running on oeis4.)