login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A035791 Start of a string of exactly 3 consecutive (but disjoint) pairs of twin primes. 4

%I

%S 5,179,809,3359,4217,6761,18041,21587,26861,49367,67187,80447,82721,

%T 91127,97841,98897,103967,109829,122597,154157,178037,203321,208931,

%U 225749,227609,236867,243671,251201,266447,285611,289109,295871,317729

%N Start of a string of exactly 3 consecutive (but disjoint) pairs of twin primes.

%D Posting to Number Theory List (NMBRTHRY(AT)LISTSERV.NODAK.EDU), Nov. 19 1998.

%e a(2)=179 because (179,181),(191,193),(197,199) is the second occurrence (after (5,7),(11,13),(17,19)) of exactly 3 pairs of twin primes.

%K nonn

%O 1,1

%A Randall Rathbun

%E More terms from _Hugo Pfoertner_, Sep 05 2003

%E Offset corrected by Arkadiusz Wesolowski, May 06 2012

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

Content is available under The OEIS End-User License Agreement .

Last modified November 21 12:45 EST 2014. Contains 249778 sequences.