login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A167728 Cubes that becomes a prime number when prefixed with a 4. 1
1, 729, 2197, 9261, 29791, 250047, 389017, 531441, 658503, 912673, 1367631, 1860867, 2685619, 5000211, 5545233, 7189057, 8120601, 15069223, 19034163, 20346417, 21253933, 24137569, 29503629 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Subsequence of cubes of A032667. - Michel Marcus, Jun 22 2016

LINKS

G. C. Greubel, Table of n, a(n) for n = 1..10000

MATHEMATICA

Select[Range[1, 500000, 2]^3, PrimeQ[FromDigits[Join[{4}, IntegerDigits[#]]]] &] (* G. C. Greubel, Jun 21 2016 *)

CROSSREFS

Cf. A032667.

Sequence in context: A255627 A139308 A295024 * A050220 A236334 A232286

Adjacent sequences:  A167725 A167726 A167727 * A167729 A167730 A167731

KEYWORD

base,nonn

AUTHOR

Claudio Meller, Nov 10 2009

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 January 21 17:43 EST 2019. Contains 319350 sequences. (Running on oeis4.)