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A179958
Number of permutations of 1..n such that |p(i)-p(i-1)| >=5 for i>1.
3
1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 2, 160, 6056, 161136, 3661824, 76972416, 1572313392, 32096768008, 665456850864, 14144815265510, 309931658271656
OFFSET
0,11
COMMENTS
Permutations such that the absolute difference between adjacent elements is at least 5.
CROSSREFS
Sequence in context: A116638 A326488 A170992 * A272244 A178575 A069580
KEYWORD
nonn
AUTHOR
R. H. Hardin, Aug 03 2010
EXTENSIONS
a(0), a(19)-a(20) from Alois P. Heinz, Oct 27 2014
STATUS
approved