The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
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!)
A166480 Greater of twin primes, written in base 6. 0

%I #9 Jun 02 2022 11:32:56

%S 5,11,21,31,51,111,141,201,251,301,351,411,501,521,531,1021,1041,1131,

%T 1151,1241,1341,1541,2001,2051,2231,2351,2441,2511,2551,3021,3431,

%U 3451,3501,3551,4031,4421,4441,4511,4531,5021,5201,5411,5531,5551,10011

%N Greater of twin primes, written in base 6.

%C All but the first value are of the form 6n+1; hence in base 6 end each ends with the digit 1.

%F a(n) = A007092(A006512(n)) = A007092(A166479(n)+2).

%t FromDigits[IntegerDigits[#,6]]&/@Select[Partition[Prime[Range[300]],2,1],#[[2]]-#[[1]] == 2&][[All,2]] (* _Harvey P. Dale_, Jun 02 2022 *)

%Y Cf. A006512, A007092, A166479.

%K base,easy,nonn

%O 1,1

%A _Jonathan Vos Post_, Oct 14 2009

%E Extended by _R. J. Mathar_, Oct 16 2009

%E Comment amended by _Harvey P. Dale_, Jun 02 2022

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 June 6 14:11 EDT 2024. Contains 373128 sequences. (Running on oeis4.)