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!)
A161915 Digital root of Ramanujan primes (A104272). 0

%I #5 Mar 30 2012 17:40:01

%S 2,2,8,2,5,2,5,4,8,7,2,8,1,5,7,5,8,1,2,4,8,5,7,2,8,2,1,5,5,7,7,4,5,4,

%T 5,8,1,7,2,1,5,8,2,4,2,8,5,7,4,2,4,8,5,2,2,8,7,1,4,4,8,2,4,8,7,2,8,1,

%U 5,2,4,2,1,2,4,5,5,7,8,1,7,2,8,5,8,2,8,2,5,7,8,2,1,5,8,5,1,5,7,8,7,2,5,2,4

%N Digital root of Ramanujan primes (A104272).

%H Eric W. Weisstein, <a href="http://mathworld.wolfram.com/RamanujanPrime.html">Ramanujan Prime</a>

%e 659 is a Ramanujan's prime whose digital root is 2.

%Y A104272

%K nonn,base

%O 1,1

%A _Parthasarathy Nambi_, Jun 22 2009

%E a(53) corrected by _R. J. Mathar_, Jul 08 2009

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 March 29 00:26 EDT 2024. Contains 371264 sequences. (Running on oeis4.)