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

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A168669 Numbers n such that sqrt(36*n+49) is prime. 2
0, 2, 22, 50, 60, 102, 172, 190, 260, 282, 520, 632, 830, 1012, 1380, 1430, 1612, 1920, 2130, 2192, 2720, 2790, 3042, 3382, 3460, 3740, 4202, 4922, 5352, 5450, 5800, 5902, 6372, 8310, 8992, 9570, 10032, 10642, 11412, 12062, 12580, 12730, 13262, 13962 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

EXAMPLE

For n=0, p=7; n=2, p=11; n=22, p=29

MATHEMATICA

Select[Range[0, 15000], PrimeQ[Sqrt[36 # + 49]]&] (* Vincenzo Librandi, Apr 05 2013 *)

CROSSREFS

Sequence in context: A200946 A322157 A156454 * A271883 A152995 A273366

Adjacent sequences:  A168666 A168667 A168668 * A168670 A168671 A168672

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Dec 02 2009

EXTENSIONS

Definition clarified by N. J. A. Sloane, Jun 18 2010.

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 December 2 02:12 EST 2021. Contains 349435 sequences. (Running on oeis4.)