199872

Appears in sequences

• Kekulé numbers for certain benzenoids.at n=6A110693
• Numbers D such that D^2 = A^3 + B^4 + C^5 has more than one solution in positive integers (A, B, C).at n=35A256603
• a(n) = floor(2^n/(-1 + cot(1/n))).at n=21A332431