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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A108857 Numbers n such that 10*n + 131 is prime. 1
 0, 2, 5, 6, 8, 11, 12, 14, 15, 18, 20, 27, 29, 30, 33, 36, 39, 41, 44, 47, 50, 51, 53, 56, 57, 62, 63, 68, 69, 75, 78, 81, 84, 86, 89, 90, 92, 93, 96, 102, 104, 105, 107, 110, 116, 117, 119, 123, 125, 132, 134, 135, 138, 140, 144, 147, 149, 159, 161, 167, 168, 170, 173 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Matthew House, Table of n, a(n) for n = 1..10000 FORMULA a(n) = A024912(n+6) - 13. - Robert Israel, Aug 09 2015 EXAMPLE If n=0 then 10*n + 131 = 131 (prime). If n=33 then 10*n + 131 = 461 (prime). MAPLE select(n -> isprime(10*n+131), [\$0..1000]); # Robert Israel, Aug 09 2015 PROG (MAGMA) [n: n in [0..200] | IsPrime(10*n+131)]; // Vincenzo Librandi, Nov 13 2010 (PARI) is(n)=isprime(10*n+131) \\ Charles R Greathouse IV, Jun 12 2017 CROSSREFS Cf. A024912. Sequence in context: A104493 A139532 A024798 * A132142 A045751 A047267 Adjacent sequences:  A108854 A108855 A108856 * A108858 A108859 A108860 KEYWORD nonn,easy AUTHOR Parthasarathy Nambi, Jul 11 2005 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.

Last modified May 11 11:54 EDT 2021. Contains 343791 sequences. (Running on oeis4.)