56738

Appears in sequences

• Difference between length (A005341) and sum of digits (A004977) of n-th term in Look and Say Sequence (A005150).at n=40A056635
• G.f. A(x) satisfies: 1 = Sum_{n>=0} ( (1+x)^n - 5*x*A(x) )^n * 2^n / 3^(n+1).at n=3A303288
• Number of partial order-preserving or -reversing transformations of a chain of length n.at n=6A371698