274752

Appears in sequences

• G.f. satisfies A(x) = 1 + x*cycle_index(G,A(x)) where G = cyclic group of order 2 generated by (1,2)(3,4)(5,6)(7,8).at n=7A036725
• Triangle read by rows: T(n,k) = 2^k*A123125(n,k).at n=42A141660