76730

Appears in sequences

• a(n) = Sum(a(2i-1)*a(n-2i+1), i = 1,2,...,[ (n+2)/4 ]).at n=26A024965
• Prime(prime(n))^2+1.at n=16A092774
• Total walk count of molecular graphs for linear alkanes with n carbon atoms.at n=13A144952
• Numbers k of the form p^2 + 1 (for prime p) where k^2 + 1 is also prime.at n=7A235053
• Numbers sandwiched between two semiprimes, one of which is a square.at n=42A358686