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A071186
Numbers k such that prime(2*k)-2*prime(k) is prime.
1
3, 4, 5, 6, 10, 11, 13, 15, 18, 19, 20, 26, 29, 33, 34, 37, 42, 43, 44, 49, 50, 60, 61, 62, 64, 65, 66, 72, 77, 79, 84, 89, 91, 92, 96, 97, 98, 99, 101, 103, 105, 109, 112, 118, 120, 126, 127, 128, 129, 130, 133, 135, 140, 144, 146, 152, 153, 155, 163, 166, 172, 173
OFFSET
1,1
COMMENTS
Numbers k such that A066066(k) is prime. - Amiram Eldar, May 19 2022
LINKS
MATHEMATICA
Select[Range[200], PrimeQ[Prime[2*#] - 2*Prime[#]] &] (* Amiram Eldar, May 19 2022 *)
PROG
(PARI) for(n=1, 251, if(isprime(prime(2*n)-2*prime(n))==1, print1(n, ", ")))
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Benoit Cloitre, Jun 10 2002
STATUS
approved