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A171688 Twin primes > 3. 2
5, 7, 11, 13, 17, 19, 29, 31, 41, 43, 59, 61, 71, 73, 101, 103, 107, 109, 137, 139, 149, 151, 179, 181, 191, 193, 197, 199, 227, 229, 239, 241, 269, 271, 281, 283, 311, 313, 347, 349, 419, 421, 431, 433, 461, 463, 521, 523, 569, 571, 599, 601, 617, 619, 641 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Twin primes of the form 6n-1 or 6n+1. [From Juri-Stepan Gerasimov, May 12 2010]

LINKS

Table of n, a(n) for n=1..55.

FORMULA

a(n)=A001097(n+1).

CROSSREFS

Cf. A001097.

Sequence in context: A098420 A093495 A093496 * A239711 A217090 A253969

Adjacent sequences:  A171685 A171686 A171687 * A171689 A171690 A171691

KEYWORD

nonn

AUTHOR

Juri-Stepan Gerasimov, Dec 15 2009

EXTENSIONS

Edited by N. J. A. Sloane, Mar 17 2010

STATUS

approved

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Last modified June 24 15:05 EDT 2017. Contains 288697 sequences.