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A180891
Number of permutations of 3..n+2 with no element greater than or equal to the sum of its neighbors
0
1, 0, 2, 6, 26, 142, 844, 5686, 42114, 349630, 3149222, 31070272, 328873208, 3760018560, 45762031978, 595413789074, 8190755202454, 119517943312606
OFFSET
1,3
CROSSREFS
Sequence in context: A134094 A009575 A263687 * A224529 A171151 A177381
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 23 2010
STATUS
approved