4251529

Appears in sequences

• a(n) = A137576((3^n-1)/2).at n=12A140320
• a(n) = 8*3^n + 1.at n=12A199111
• a(n) = 8*9^n+1.at n=6A199677
• Semiprimes of the form k^3 + 1.at n=19A237040