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

 

Logo

Invitation: celebrating 50 years of OEIS, 250000 sequences, and Sloane's 75th, there will be a conference at DIMACS, Rutgers, Oct 9-10 2014.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A083577 Prime star numbers. 3
13, 37, 73, 181, 337, 433, 541, 661, 937, 1093, 2053, 2281, 2521, 3037, 3313, 5581, 5953, 6337, 6733, 7561, 7993, 8893, 10333, 10837, 11353, 12421, 12973, 13537, 15913, 18481, 20533, 21961, 25741, 27337, 32413, 33301, 36037, 36973, 42841 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Zak Seidov, Table of n, a(n) for n = 1..1000

EXAMPLE

a(1)=13 because

.....().....

..()()()()..

...()()()...

..()()()()..

.....().....

is prime.

PROG

(PARI) for(n=1, 150, s=6*n*(n-1)+1; if(isprime(s), print1(s", ")))

CROSSREFS

Cf. A003154.

Sequence in context: A113601 A158864 A003154 * A155285 A155262 A155301

Adjacent sequences:  A083574 A083575 A083576 * A083578 A083579 A083580

KEYWORD

easy,nonn

AUTHOR

Jason Earls (zevi_35711(AT)yahoo.com), Jun 13 2003

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified July 25 11:57 EDT 2014. Contains 244910 sequences.