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!)
A201707 Primes of the form 9n^2 + 7. 1
7, 43, 151, 331, 907, 1303, 2311, 3607, 4363, 6091, 13003, 14407, 17431, 19051, 20743, 26251, 34603, 36871, 46663, 51991, 66571, 72907, 79531, 90007, 108907, 129607, 133963, 156823, 161611, 166471, 171403, 219031, 224683, 311371 (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[9n^2+7, {n, 0, 1000}], PrimeQ]

PROG

(MAGMA) [a: n in [0..300] | IsPrime(a) where a is 9*n^2+7];

CROSSREFS

Sequence in context: A134154 A183537 A114352 * A255314 A166813 A112563

Adjacent sequences:  A201704 A201705 A201706 * A201708 A201709 A201710

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Dec 04 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 July 29 22:13 EDT 2021. Contains 346346 sequences. (Running on oeis4.)