A095150 a(n) = prime(2^2^n + 1).

5, 11, 59, 1621, 821647

Offset

0,1

Comments

The Fermat-th prime prime.

Links

Table of n, a(n) for n=0..4.

Andrew Booker, The Nth Prime Page.

Example

The third Fermat prime is 2^2^2+1 = 17. The 17th prime is 59, the 3rd entry in the sequence.

Prog

(PARI) f(n) = for(x=1, n, print1(prime(2^2^x+1)", "))

Crossrefs

Sequence in context: A057822 A168243 A173875 * A215759 A041697 A121170

Adjacent sequences: A095147 A095148 A095149 * A095151 A095152 A095153

Keyword

nonn

Author

Cino Hilliard, Jun 20 2004

Status

approved