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!)
A112397 Primes of the form semiprime(n) + Fibonacci(n). 0

%I #6 May 02 2018 11:19:10

%S 5,7,11,13,19,23,43,59,1033,3928413764606871166057,

%T 178890334785183168257455287892297,

%U 13598018856492162040239554477268823,505988662735923140767969869749836918999964413630219878131,162926777992448823780908130212788963731840407743629812914361

%N Primes of the form semiprime(n) + Fibonacci(n).

%t Module[{nn=3000,s,len,f},s=Select[Range[nn],PrimeOmega[#]==2&];len= Length[ s];Select[Total/@Thread[{s,Fibonacci[Range[len]]}],PrimeQ]] (* _Harvey P. Dale_, May 02 2018 *)

%Y Cf. A001358, A000045.

%K nonn

%O 1,1

%A _Giovanni Teofilatto_, Dec 06 2005

%E Index in definition corrected and 5 terms added by _R. J. Mathar_ Jun 28 2010

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 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)