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!)
A144233 Prime numbers of the form 5^k +- 4 for k >= 1. 7
29, 3121, 15629, 78121, 9765629, 30517578121, 710542735760100185871124267578121, 413590306276513837435704346034981426782906055450439453121, 197215226305252951352932141320696557418301608777255751192569732666015629 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..9.

MATHEMATICA

Select[Flatten[Table[5^n+{-4, 4}, {n, 90}]], PrimeQ] (* Harvey P. Dale, Jan 26 2019 *)

CROSSREFS

Cf. A000040, A000668, A144231, A144232.

Sequence in context: A305138 A091751 A055559 * A125074 A033519 A260844

Adjacent sequences:  A144230 A144231 A144232 * A144234 A144235 A144236

KEYWORD

nonn

AUTHOR

Reikku Kulon, Sep 15 2008

EXTENSIONS

More terms from Alois P. Heinz, Jul 14 2019

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 June 13 11:39 EDT 2021. Contains 344992 sequences. (Running on oeis4.)