A176595 a(n) = 11^(2^n).

11, 121, 14641, 214358881, 45949729863572161, 2111377674535255285545615254209921, 4457915684525902395869512133369841539490161434991526715513934826241

Offset

0,1

Links

Table of n, a(n) for n=0..6.

Formula

a(n+1) = a(n)^2 with a(0) = 11.

a(n) = A001020(A000079(n)). - Michel Marcus, Sep 13 2015

Product_{n>=0} (1 + 1/a(n)) = 11/10. - Amiram Eldar, Nov 30 2025

Mathematica

Table[11^2^n, {n, 0, 6}] (* Vincenzo Librandi, Sep 13 2015 *)

Prog

(Magma) [11^2^n: n in [0..6]]; // Vincenzo Librandi, Sep 13 2015
(PARI) a(n)=11^(2^n) \\ Charles R Greathouse IV, Apr 15 2020

Crossrefs

Cf. A000079, A001020.

Sequence in context: A082776 A216208 A110398 * A067218 A368114 A293805

Adjacent sequences: A176592 A176593 A176594 * A176596 A176597 A176598

Keyword

nonn,easy

Author

Vincenzo Librandi, Apr 21 2010

Extensions

Offset corrected by R. J. Mathar, Jun 18 2010

Status

approved