A171713 2n-th twin prime such that the q-th prime of the form 6*k-1 and the q-th prime of the form 6*k+1 are the 2n-th and (2n+1)-st twin primes (A001097).

5, 11, 17, 41, 227

Offset

1,1

Links

Table of n, a(n) for n=1..5.

Example

a(1)=5 because 1st primes (6*1-1=5 and 6*1+1=7) are a pair of twin primes;
a(2)=11 because 2nd primes (6*2-1=11 and 6*2+1=13) are a pair of twin primes;
a(3)=17 because 3rd primes (6*3-1=17 and 6*3+1=19) are a pair of twin primes;
a(4)=41 because 6th primes (6*7-1=41 and 6*7+1=43) are a pair of twin primes;
a(5)=227 because 24th primes (6*38-1=227 and 6*38+1=229) are a pair of twin primes.

Crossrefs

Cf. A000027, A001097, A002476, A007528, A171708.

Sequence in context: A339503 A172454 A162001 * A174858 A246704 A095183

Adjacent sequences: A171710 A171711 A171712 * A171714 A171715 A171716

Keyword

nonn,more

Author

Juri-Stepan Gerasimov, Dec 16 2009

Extensions

Incorrect a(6) removed by R. J. Mathar, Jun 07 2010

Status

approved