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!)
A260563 Numbers n such that (n^47+1)/(n+1) is prime. 1
6, 7, 17, 90, 126, 139, 143, 257, 293, 295, 319, 387, 482, 519, 603, 720, 819, 884, 896, 903, 905, 921, 952, 954, 956, 1042, 1058, 1147, 1170, 1237, 1253, 1279, 1295, 1343, 1366, 1370, 1406, 1465, 1514, 1593, 1595, 1607, 1609, 1622, 1701, 1705, 1709, 1736, 1772 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Tim Johannes Ohrtmann, Table of n, a(n) for n = 1..10000

MATHEMATICA

Select[Range[1, 10000], PrimeQ[(#^47 + 1)/(# + 1)] &]

PROG

(PARI) for(n=1, 10000, if(isprime((n^47+1)/(n+1)), print1(n, ", ")))

(MAGMA) [n: n in [1..10000] |IsPrime((n^47 + 1) div (n + 1))]

CROSSREFS

Cf. A055494, A246392, A250174, A250178, A250181, A250185, A250187, A250193, A260558-A260573.

Sequence in context: A139450 A219853 A250196 * A118666 A315847 A030746

Adjacent sequences:  A260560 A260561 A260562 * A260564 A260565 A260566

KEYWORD

nonn

AUTHOR

Tim Johannes Ohrtmann, Jul 29 2015

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 August 3 01:55 EDT 2021. Contains 346429 sequences. (Running on oeis4.)