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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A210504 Numbers n for which 2*n+5, 4*n+5, 6*n+5, and 8*n+5 are primes. 2
0, 3, 6, 21, 24, 48, 63, 126, 213, 237, 297, 318, 402, 609, 657, 714, 783, 864, 948, 1053, 1287, 1347, 1449, 1581, 1683, 2166, 2184, 2358, 2457, 2463, 2481, 2736, 2793, 2898, 2919, 3024, 3723, 3786, 3909, 4017, 4479, 4584, 4602, 4857, 5169, 5634, 5733, 7101 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

All terms are multiple of 3.

LINKS

Harvey P. Dale, Table of n, a(n) for n = 0..1000

MATHEMATICA

Select[Range[0, 10000], PrimeQ[2*# + 5] && PrimeQ[4*# + 5] && PrimeQ[6*# + 5] && PrimeQ[ 8*# + 5] &] (* T. D. Noe, Jan 25 2013 *)

Select[Range[0, 8000], AllTrue[#{2, 4, 6, 8}+5, PrimeQ]&] (* The program uses the AllTrue function from Mathematica version 10 *) (* Harvey P. Dale, Jan 14 2016 *)

CROSSREFS

Cf. A115334.

Sequence in context: A260157 A101719 A173165 * A101582 A069558 A174461

Adjacent sequences:  A210501 A210502 A210503 * A210505 A210506 A210507

KEYWORD

nonn

AUTHOR

Vladimir Shevelev and Peter J. C. Moses, Jan 25 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 17 08:36 EDT 2019. Contains 328107 sequences. (Running on oeis4.)