login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A087864 Primes generated from A039726. 1
3, 7, 31, 211, 2311, 43891, 1272811, 47093971, 2213416591, 148298911531, 15274787887591, 2734187031878611, 522229723088814511, 116457228248805635731, 31559908855426327282831 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

H. Dubner, Recursive Prime Generating Sequences, Table 2, pp. 172, Journal of Recreational Mathematics, vol. 29(3) 1998, pp. 172-?, see Table 2.

LINKS

Table of n, a(n) for n=1..15.

MATHEMATICA

k = 1; cp = 2; ct = 1; n[ct] = 3; While[ct < 20, k++; p = Prime[k]; cp1 = cp*p; If[PrimeQ[cp1 + 1], cp = cp1; ct++; n[ct] = cp + 1]]; Table[n[k], {k, 1, ct}] (Lei Zhou)

CROSSREFS

Sequence in context: A289125 A083772 A093441 * A066676 A073917 A030521

Adjacent sequences:  A087861 A087862 A087863 * A087865 A087866 A087867

KEYWORD

nonn

AUTHOR

Lekraj Beedassy, Oct 10 2003

EXTENSIONS

More terms from Ray Chandler, Nov 06 2003

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 17 16:03 EDT 2021. Contains 343980 sequences. (Running on oeis4.)