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!)
A110746 a(n+1) is the least multiple of a(n) such that the digit reversal of the concatenation of the first n+1 terms is prime. 1

%I #5 Dec 05 2013 19:57:04

%S 1,1,2,4,8,136,272,1360,14960,254320,6103680,30518400,335702400,

%T 8056857600,499525171200,63439696742400,1649432115302400,

%U 94017630572236800,5923110726050918400,1528162567321136947200,385096966964926510694400,93963659939442068609433600

%N a(n+1) is the least multiple of a(n) such that the digit reversal of the concatenation of the first n+1 terms is prime.

%e 11, 211, 4211, 84211, 63184211 are all primes.

%Y Cf. A110747.

%K base,nonn,less

%O 1,3

%A _Amarnath Murthy_, Aug 10 2005

%E Clarified definition and extended. - _David Wasserman_, Dec 16 2008

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 April 23 20:33 EDT 2024. Contains 371916 sequences. (Running on oeis4.)