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A180391
Number of permutations of 1..n with the permutation and its inverse having the same number of maxima
0
1, 2, 4, 16, 74, 372, 2484, 18752, 155654, 1489692, 15673104, 179244512, 2245555252, 30338525896
OFFSET
1,2
CROSSREFS
Sequence in context: A213327 A192623 A155519 * A371389 A275555 A370485
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 01 2010
STATUS
approved