42097

Appears in sequences

• Piet Hut's "coat-hanger" sequence: unlabeled forests of rooted trees with n edges, where there can be any number of components, the outdegree of each node is <= 2 and the symmetric group acts on the components.at n=15A088325
• Numbers k such that 449*2^k+1 is prime.at n=23A323194
• G.f. satisfies A(x) = 1 + x^4*A(x)*(1 + x*A(x)).at n=41A365727