115808

Appears in sequences

• Number of non-monotonic functions from [k] to [n-k].at n=39A189711
• a(n) = 11*a(n-1) - 9*a(n-2), a(0)=0, a(1)=1.at n=6A190872
• Largest number of maximum matchings in a tree of n vertices.at n=36A333347