A095124 a(n) = prime(2^(2^n)).

3, 7, 53, 1619, 821641, 104484802057, 870566678511500413493

Offset: 0

Author

Cino Hilliard, Jun 19 2004

Keywords

• nonn
• hard
• more

Comments

An estimate using the program in A121046 for a(7) is 3.13863199556707166...*10^40. - Hugo Pfoertner, Mar 26 2024

Links

• Andrew Booker, The Nth Prime Page.

Crossrefs

Cf. A000040, A001146, A033844.

Programs

Mathematica

Table[Prime[2^(2^n)],{n,0,5}] (* Harvey P. Dale, Oct 13 2013 *)

PARI

f(n) = for(x=0,n,print1(prime(2^2^x)","))

Formula

a(n) = A000040(A001146(n)). - Michel Marcus, Mar 25 2024

a(n) = A033844(2^n). - Rainer Rosenthal, Mar 25 2024

Extensions

a(6) from Rainer Rosenthal, Mar 25 2024