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!)
A062609 Numbers k such that 43^k - 42^k is prime or a strong pseudoprime. 2
3, 13, 43, 211 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(5) > 10^5 - Robert Price, Dec 24 2012

LINKS

Table of n, a(n) for n=1..4.

PROG

(PARI) forprime(n=1, 9999, ispseudoprime(43^n-42^n) && print1(n", ")) \\ - M. F. Hasler, Sep 21 2013

CROSSREFS

Cf. A000043, A057468, A059801-A059803, A062572-A062608, A215632, A062611-A062666.

Sequence in context: A258776 A201710 A019008 * A004660 A208060 A284194

Adjacent sequences: A062606 A062607 A062608 * A062610 A062611 A062612

KEYWORD

nonn,hard

AUTHOR

Mike Oakes, May 18 2001, May 19 2001

EXTENSIONS

Edited by M. F. Hasler, Sep 21 2013

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 March 21 16:33 EDT 2023. Contains 361408 sequences. (Running on oeis4.)