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A180896
Number of permutations of 8..n+7 with no element greater than or equal to the sum of its neighbors
0
1, 0, 2, 6, 30, 180, 1260, 10080, 90720, 887040, 9432360, 107012160, 1300448160, 16716051384, 228160919040, 3276565988040, 49664631128706, 788840324793320
OFFSET
1,3
CROSSREFS
Sequence in context: A180893 A180894 A180895 * A180897 A353184 A096769
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 23 2010
STATUS
approved