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!)
A199004 Position of n-th prime sextuplet A022008(n) among prime 5-tuples A022007. 1

%I #14 Apr 11 2022 22:04:42

%S 1,2,7,8,9,35,49,55,75,76,82,84,115,124,133,140,144,153,167,172,177,

%T 200,201,202,203,211,213,232,235,237,240,243,245,252,256,262,276,281,

%U 285,297,305,319,322,325,331,349,352,353,374,377,379,380,399,407,415

%N Position of n-th prime sextuplet A022008(n) among prime 5-tuples A022007.

%H Zak Seidov, <a href="/A199004/b199004.txt">Table of n, a(n) for n = 1..1000</a>

%F A022007(a(n))=A022008(n).

%e a(3)=7 because A022008(3)=16057=A022007(7),

%e a(1000)=12091 because A022008(1000)=5054057077=A022007(12091).

%t lst = {}; cnt = 0; Do[p = Prime[n]; If[PrimeQ[p+4] && PrimeQ[p+6] && PrimeQ[p+10] && PrimeQ[p+12], cnt++; If[PrimeQ[p+16], AppendTo[lst, cnt]]], {n, 10000000}]; lst (* _T. D. Noe_, Nov 01 2011 *)

%Y Cf. A022007, A022008.

%K nonn

%O 1,2

%A _Zak Seidov_, Nov 01 2011

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 May 22 10:24 EDT 2024. Contains 372745 sequences. (Running on oeis4.)