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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A023222 Numbers n such that n and 6n + 7 both prime. 0
2, 5, 11, 17, 29, 31, 37, 61, 67, 71, 89, 101, 109, 127, 137, 167, 181, 191, 199, 229, 241, 257, 269, 277, 281, 311, 331, 337, 347, 359, 379, 389, 397, 419, 431, 457, 491, 499, 509, 541, 571, 577, 587, 601, 617, 631, 641, 647, 691, 709, 739, 751, 757, 769, 787, 797, 809 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

PROG

(MAGMA) [n: n in [0..1000] | IsPrime(n) and IsPrime(6*n+7)] [From V. Librandi, Nov 19 2010]

CROSSREFS

Sequence in context: A038390 A048210 A153222 * A007491 A124850 A156850

Adjacent sequences:  A023219 A023220 A023221 * A023223 A023224 A023225

KEYWORD

nonn

AUTHOR

David W. Wilson (davidwwilson(AT)comcast.net)

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 13 13:45 EST 2012. Contains 205486 sequences.