login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A245593 a(n) = (R_n)^n. 2

%I #11 Sep 08 2022 08:46:09

%S 1,121,1367631,1523548331041,169342410709747836551,

%T 1881665133128606900860142518161,

%U 2090750117762021873788017450039922462386871,232305712669729896500117628007183171975956078054818623681,2581174768482624149493549155062886015819364354785066837288515125486819591,2867971987924469323820403313431021627485478704243749999500499658223600043001340850612575601

%N a(n) = (R_n)^n.

%C R_n is the repdigit 11...111 with n 1's.

%H Vincenzo Librandi, <a href="/A245593/b245593.txt">Table of n, a(n) for n = 1..30</a>

%e 1^1 = 1.

%e 11^2 = 121.

%e 111^3 = 1367631.

%e etc..

%t Table[((10^n - 1)/9)^n, {n, 10}] (* _Vincenzo Librandi_, Jul 27 2014 *)

%o (PARI) a(N) = for(n=1,N,print1(((10^n-1)/9)^n,", ")) \\ vary the program's range for any N

%o (Magma) [((10^n-1)/9)^n: n in [1..10]]; // _Vincenzo Librandi_, Jul 27 2014

%Y Cf. A002275.

%K nonn,easy

%O 1,2

%A _Derek Orr_, Jul 27 2014

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 13 04:25 EDT 2024. Contains 375859 sequences. (Running on oeis4.)