login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A201848 Primes of the form 7n^2 - 2. 1
5, 61, 173, 1181, 3701, 4373, 5101, 7621, 8573, 12941, 14173, 15461, 19661, 22741, 29573, 39373, 48221, 52981, 80141, 89381, 112901, 123821, 131381, 143141, 163861, 172541, 190573, 214373, 219301, 244781, 288461, 299941, 354373 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..5000

MATHEMATICA

Select[Table[7n^2-2, {n, 1, 1000}], PrimeQ]

PROG

(MAGMA) [a: n in [1..400] | IsPrime(a) where a is 7*n^2-2];

CROSSREFS

Sequence in context: A321616 A182352 A142643 * A087871 A242194 A046976

Adjacent sequences:  A201845 A201846 A201847 * A201849 A201850 A201851

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Dec 06 2011

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 20 11:06 EST 2020. Contains 331083 sequences. (Running on oeis4.)