A039657 Number of digits in all (2n+1)-digit palindromic primes.

4, 45, 465, 4676, 46548, 462462, 4598113, 45549645, 459768842, 4542783435, 45319909593, 454084412972

Offset: 0

Author

Enoch Haga

Keywords

• nonn
• base
• more

Examples

			There are 5172 9-digit palindromic primes, 5172*9 = 46548 digits.
		

References

• For 17-digit palindromic primes, work of Martin Eibl, Carlos Rivera and Warut Roonguthai on De Geest's website

Links

• P. De Geest, World!Of Palindromic Primes, Page 1

Crossrefs

Cf. A040025.

Formula

a(n) = (2n+1)*A040025(n). - Michel Marcus, Jul 24 2015

Extensions

a(9)-a(11) from A040025 by Michel Marcus, Jul 24 2015