274176

Appears in sequences

• Product of terms in row n of A082822.at n=4A082825
• Triangle of numbers used for basis change between certain falling factorials.at n=39A089503
• If X_1,...,X_n is a partition of a 2n-set X into 2-blocks then a(n) is equal to the number of 5-subsets of X containing none of X_i, (i=1,...n).at n=13A130811
• Molecular topological indices of the graph join C_n + C_n of cycle graphs.at n=31A192848
• Number of length n+3 0..2 arrays with no four elements in a row with pattern aabb (possibly a=b) and new values 0..2 introduced in 0..2 order.at n=10A242543
• E.g.f.: Product_{k>=1} (1 + tan(x^k)).at n=8A270666