A013717 -id:A013717 - cp's OEIS frontend

A013716 a(n) = 11^(2*n + 1).

11, 1331, 161051, 19487171, 2357947691, 285311670611, 34522712143931, 4177248169415651, 505447028499293771, 61159090448414546291, 7400249944258160101211, 895430243255237372246531

Offset: 0

N. J. A. Sloane

Vincenzo Librandi, Table of n, a(n) for n = 0..200
Tanya Khovanova, Recursive Sequences
Index entries for linear recurrences with constant coefficients, signature (121).

Bisection of A001020 (11^n).

Cf. A013708-A013715, A013717-A013729.

[11^(2*n+1): n in [0..15]]; // Vincenzo Librandi, Jun 26 2011

seq(11^(2*n+1),n=0..11); # Nathaniel Johnston, Jun 25 2011

11^(2*Range[0,20]+1) (* or *) NestList[121#&,11,20] (* Harvey P. Dale, Jun 21 2024 *)

a(n)=11^(2*n+1) \\ Charles R Greathouse IV, Jul 11 2016

From Philippe Deléham, Nov 25 2008: (Start)
a(n) = 121*a(n-1), a(0)=11.
G.f.: 11/(1-121*x). (End)

A013718 a(n) = 13^(2*n + 1).

Original entry on oeis.org

13, 2197, 371293, 62748517, 10604499373, 1792160394037, 302875106592253, 51185893014090757, 8650415919381337933, 1461920290375446110677, 247064529073450392704413, 41753905413413116367045797

Offset: 0

N. J. A. Sloane

Vincenzo Librandi, Table of n, a(n) for n = 0..200
Tanya Khovanova, Recursive Sequences
Index entries for linear recurrences with constant coefficients, signature (169).

Bisection of A001022 (12^n).

Cf. A013708-A013717, A013719-A013729.

[13^(2*n+1): n in [0..15]]; // Vincenzo Librandi, Jun 26 2011

seq(13^(2*n+1),n=0..11); # Nathaniel Johnston, Jun 25 2011

a(n)=13^(2*n+1) \\ Charles R Greathouse IV, Jul 11 2016

From Philippe Deléham, Nov 25 2008: (Start)
a(n) = 169*a(n-1); a(0)=13.
G.f.: 13/(1-169*x). (End)

cp's OEIS Frontend

A013716 a(n) = 11^(2*n + 1).

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