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!)
A070655 Numbers n such that n+1, n^2+1, n^4+1 and n^8+1 are primes. 4
1, 2, 4, 19380, 285090, 337536, 448630, 532390, 534430, 545140, 547536, 585106, 602056, 677076, 876180, 1007386, 1030200, 1331950, 1462000, 1736346, 1878790, 1883856, 2071960, 2194666, 2240890, 2763010, 2824720, 3018606, 3114996 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
MATHEMATICA
Do[ If[ PrimeQ[n + 1] && PrimeQ[n^2 + 1] && PrimeQ[n^4 + 1] && PrimeQ[n^8 + 1], Print[n]], {n, 1, 10^7}]
CROSSREFS
Cf. A070325.
Sequence in context: A134718 A328313 A048829 * A006263 A266198 A274990
KEYWORD
nonn
AUTHOR
Robert G. Wilson v, May 13 2002
STATUS
approved

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 February 21 06:16 EST 2024. Contains 370219 sequences. (Running on oeis4.)