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A179961
Number of permutations of 1..n with no adjacent elements within 7 in value.
0
1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1664, 395576, 40495488, 2779045440, 147689145984
OFFSET
0,17
CROSSREFS
Sequence in context: A062585 A239505 A002490 * A160224 A129061 A233132
KEYWORD
nonn
AUTHOR
R. H. Hardin, Aug 03 2010
EXTENSIONS
a(0)-a(14), a(21) from Alois P. Heinz, Dec 01 2018
STATUS
approved