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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A108584 Numbers k such that 10*k - 97 is prime. 1
10, 11, 12, 14, 15, 17, 18, 20, 21, 26, 27, 29, 32, 33, 36, 38, 39, 41, 45, 47, 48, 53, 54, 56, 60, 62, 66, 69, 71, 74, 75, 77, 78, 83, 84, 87, 92, 95, 96, 98, 105, 108, 111, 113, 116, 119, 120, 122, 125, 126, 129, 131, 132, 138, 140 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Michael De Vlieger, Table of n, a(n) for n = 1..10000

EXAMPLE

If k=10 then 10*k - 97 = 3 (prime).

If k=36 then 10*k - 97 = 263 (prime).

MATHEMATICA

Select[Range[10, 200], PrimeQ[10#-97]&] (* Harvey P. Dale, Jan 10 2015 *)

PROG

(MAGMA) [n: n in [10..200]| IsPrime(10*n - 97)]; // Vincenzo Librandi, Feb 03 2011

(PARI) is(n)=isprime(10*n-97) \\ Charles R Greathouse IV, Jun 13 2017

CROSSREFS

Sequence in context: A107860 A244156 A058948 * A098605 A126802 A075775

Adjacent sequences:  A108581 A108582 A108583 * A108585 A108586 A108587

KEYWORD

nonn,easy

AUTHOR

Parthasarathy Nambi, Jul 05 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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 16 18:03 EDT 2019. Contains 328102 sequences. (Running on oeis4.)