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A179962
Number of permutations of 1..2*n+4 with no adjacent elements within n in value.
0
24, 90, 368, 1496, 6056, 24440, 98408, 395576, 1588136, 6370040, 25532648, 102288056
OFFSET
0,1
CROSSREFS
Sequence in context: A010012 A256718 A233637 * A076799 A297540 A365191
KEYWORD
nonn,more
AUTHOR
R. H. Hardin, Aug 03 2010
EXTENSIONS
a(0)=24 prepended by Seiichi Manyama, Dec 01 2018
STATUS
approved