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!)
A154488 a(n+1)-+a(n)=prime, a(1)=1,a(2)=12. 9

%I #4 Jun 19 2021 12:54:44

%S 1,12,17,20,23,30,37,42,47,50,53,56,75,82,85,88,91,102,109,114,119,

%T 122,129,134,137,140,143,150,157,160,171,176,183,190,193,196,201,208,

%U 211,222,227,230,233,246,253,256,267,274,297,302,305,308,311,330,343,348

%N a(n+1)-+a(n)=prime, a(1)=1,a(2)=12.

%C Sum and difference of any of two consecutive numbers in current sequence are prime numbers : 230-227=3;230+227=457, 233-230=3;233+230=463,...

%t a=1;b=12;lst={a,b};Do[If[PrimeQ[n-b]&&PrimeQ[n+b],AppendTo[lst,n];a=b;b=n],{n,b+1,7!}];lst

%Y Cf. A154484, A154485, A154486, A154487

%K nonn

%O 1,2

%A _Vladimir Joseph Stephan Orlovsky_, Jan 10 2009

%E NAME adapted to offset. - _R. J. Mathar_, Jun 19 2021

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 16 13:43 EDT 2024. Contains 371720 sequences. (Running on oeis4.)