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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A124849 Numbers n such that 7n+3 and 3n+7 are primes. 1
0, 2, 4, 8, 10, 22, 32, 34, 40, 44, 50, 52, 58, 68, 74, 88, 92, 110, 122, 134, 142, 160, 164, 178, 188, 208, 212, 242, 250, 260, 268, 272, 304, 320, 334, 344, 352, 370, 374, 382, 388, 398, 424, 428, 440, 458, 464, 472, 484, 494, 508, 520, 524, 538, 550, 554, 572 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

Intersection of A089033 and A089953.

PROG

~(MAGMA) [n: n in [0..1000] | IsPrime(7*n+3) and IsPrime(3*n+7)] [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it)

CROSSREFS

Cf. A089033, A089953, A124850.

Sequence in context: A177909 A004655 A127101 * A056654 A020950 A056386

Adjacent sequences:  A124846 A124847 A124848 * A124850 A124851 A124852

KEYWORD

nonn

AUTHOR

Zak Seidov (zakseidov(AT)yahoo.com), Nov 10 2006

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 February 17 14:44 EST 2012. Contains 206045 sequences.