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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A201481 Primes of the form 5n^2 + 2. 1
2, 7, 47, 127, 607, 1447, 2207, 2647, 7607, 11047, 12007, 13007, 22447, 26647, 37847, 39607, 45127, 53047, 55127, 59407, 68447, 83207, 91127, 129607, 160207, 186247, 206047, 210127, 235447, 239807, 295247, 305047, 330247, 361807 (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[5n^2+2, {n, 0, 900}], PrimeQ]

PROG

(MAGMA) [a: n in [0..400] | IsPrime(a) where a is 5*n^2+2];

CROSSREFS

Sequence in context: A027458 A062632 A116892 * A054555 A072287 A091117

Adjacent sequences:  A201478 A201479 A201480 * A201482 A201483 A201484

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Dec 02 2011

STATUS

approved

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

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

Last modified May 21 10:03 EDT 2013. Contains 225478 sequences.