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!)
A057467 GCD of n-th and (n+1)-st term in the sequence of first differences between primes, A001223. 6

%I #13 Mar 21 2020 09:40:27

%S 1,2,2,2,2,2,2,2,2,2,2,2,2,2,6,2,2,2,2,2,2,2,2,4,2,2,2,2,2,2,2,2,2,2,

%T 2,6,2,2,6,2,2,2,2,2,2,12,4,2,2,2,2,2,2,6,6,2,2,2,2,2,2,2,2,2,2,2,2,2,

%U 2,2,2,2,6,2,2,2,4,4,2,2,2,2,2,2,2,2,4,2,2,4,4,4,4,4,2,6,2,2,6,2,2,6,2,2

%N GCD of n-th and (n+1)-st term in the sequence of first differences between primes, A001223.

%F a(n) = gcd( A001223(n+1), A001223(n) ).

%t Map[GCD @@ # &, Partition[#, 2, 1] &@ Differences@ Prime@ Range@ 100] (* _Michael De Vlieger_, Feb 18 2017 *)

%Y Cf. A001223.

%K nonn,easy

%O 1,2

%A _Labos Elemer_, Dec 06 2000

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 10:34 EDT 2024. Contains 371967 sequences. (Running on oeis4.)