login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A088175 Primes such that the next two primes are a twin prime pair. 4
2, 3, 7, 13, 23, 37, 53, 67, 97, 103, 131, 139, 173, 181, 193, 223, 233, 263, 277, 307, 337, 409, 421, 457, 509, 563, 593, 613, 631, 653, 797, 811, 823, 853, 877, 1013, 1021, 1039, 1051, 1087, 1129, 1223, 1259, 1283, 1297, 1307, 1423, 1447, 1471, 1483, 1601 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Primes p such that nextprime(p) + 2 is prime. - Irina Gerasimova, Jun 28 2013
LINKS
MAPLE
A088175 := proc(n)
prevprime(A001359(n)) ;
end proc:
seq(A088175(n), n=1..30) ; # R. J. Mathar, Nov 26 2014
MATHEMATICA
fQ[n_]:=PrimeQ[NextPrime[n]+2]; Select[Prime@Range@500, fQ] (* Vladimir Joseph Stephan Orlovsky, Apr 16 2011 *)
PROG
(PARI) is(n)=isprime(n) && isprime(nextprime(n+1)+2) \\ Charles R Greathouse IV, Jun 28 2013
(Magma) [NthPrime(n): n in [1..260] | NthPrime(n+2)-NthPrime(n+1) eq 2]; // Vincenzo Librandi, Nov 18 2014
CROSSREFS
Cf. A088176.
Sequence in context: A291544 A208149 A144104 * A271827 A298339 A091440
KEYWORD
easy,nonn
AUTHOR
Zak Seidov, Sep 22 2003
EXTENSIONS
More terms from Ray Chandler, Sep 25 2003
Definition clarified by Irina Gerasimova, Jun 28 2013
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 5 21:37 EDT 2024. Contains 372290 sequences. (Running on oeis4.)