358018

Appears in sequences

• Number of permutations on {1,...,n} containing any given pattern alpha in the symmetric group S_3.at n=8A056986
• a(n) = a(n-3) - 5*a(n-2) + 5*a(n-1), a(0) = 1, a(1) = 3, a(2) = 10.at n=10A102871
• a(n) = -a(n-1)+4*a(n-2)+4*a(n-3)-a(n-4)-a(n-5).at n=22A107401
• a(n) = A002531(n)*A002531(n+1).at n=10A146983
• Number of permutations T(n,k) in S_n containing an increasing subsequence of length k; triangle T(n,k), n>=1, 1<=k<=n, read by rows.at n=38A214152