335520

Appears in sequences

• Number of positive integers <= 2^n of form 5 x^2 + 7 y^2.at n=22A054177
• a(n) = 2*A001610(n).at n=24A168674
• Number of Hamiltonian cycles in the generalized Petersen Graph P(n,2).at n=47A195197
• The number of Hamiltonian cycles in the concentric ring graph of order n.at n=22A384294