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!)
A103409 Numbers n such that n2357 is prime. 1
0, 9, 14, 17, 20, 23, 24, 35, 36, 38, 56, 57, 59, 65, 66, 71, 80, 89, 90, 92, 93, 99, 104, 114, 119, 125, 132, 141, 143, 149, 152, 156, 189, 191, 203, 204, 215, 227, 234, 243, 245, 252, 255, 258, 264, 267, 273, 275, 279, 281, 290, 293, 303, 311, 314, 317, 332, 344, 357, 362, 365 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Robert Israel, Table of n, a(n) for n = 1..10000

EXAMPLE

n=56 is in the sequence because n2357 = 562357 is prime.

n=99 is in the sequence because n2357 = 992357 is prime.

MAPLE

select(t -> isprime(10000*t+2357), [$0..1000]); # Robert Israel, May 18 2017

PROG

(MAGMA) [ n: n in [1..700] | IsPrime(Seqint([7, 5, 3, 2] cat Intseq(n))) ]; // Vincenzo Librandi, Feb 03 2011 (misses the zero)

CROSSREFS

Sequence in context: A036266 A087722 A217005 * A011767 A305092 A205690

Adjacent sequences:  A103406 A103407 A103408 * A103410 A103411 A103412

KEYWORD

base,nonn

AUTHOR

Parthasarathy Nambi, Mar 20 2005

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 September 23 20:31 EDT 2021. Contains 347617 sequences. (Running on oeis4.)