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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A100913 Numbers n such that (273*2^n-1)^2-2 is prime. 0
1, 2, 3, 6, 7, 9, 10, 12, 19, 20, 25, 26, 30, 31, 45, 47, 57, 72, 81, 86, 108, 112, 132, 196, 228, 231, 239, 345, 384, 410, 429, 1687, 2245, 2519, 2714, 2816, 3155, 3956, 4319, 4917, 5913, 7854, 8823, 11650, 14320, 18143, 23185, 43834, 46121, 51488, 51972 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..51.

S. Harvey, Carol and Kynea Primes.

PROG

(PARI) is(n)=ispseudoprime((273*2^n-1)^2-2) \\ Charles R Greathouse IV, Feb 19 2016

CROSSREFS

Sequence in context: A047561 A285567 A153123 * A047285 A191215 A190847

Adjacent sequences:  A100910 A100911 A100912 * A100914 A100915 A100916

KEYWORD

nonn

AUTHOR

Ray Chandler, Nov 21 2004

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 January 25 19:09 EST 2020. Contains 331249 sequences. (Running on oeis4.)