The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A080701 Product of upper bound twin-prime-indexed primes and their upper bound twin prime. 0
 55, 119, 533, 1273, 3937, 8213, 17263, 26791, 57989, 65291, 110783, 132427, 196747, 226003, 242183, 331363, 367043, 471811, 522701, 651353, 820499, 1224689, 1307227, 1527437, 1967003, 2371363, 2657021, 2826973, 3078041, 3267323 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS FORMULA Let prime(i) = i-th prime, let twin(n) = (P, Q) be n-th pair of twin primes; sequence gives prime(Q)*Q. EXAMPLE The 3rd pair of twin primes is twin(3) = (11,13), prime(13) = 41, a(3) = 41*13 = 533. MATHEMATICA #*Prime[#]&/@(Transpose[Select[Partition[Prime[Range[200]], 2, 1], Last[#]- First[#] ==2&]][[2]]) (* Harvey P. Dale, Jun 04 2014 *) CROSSREFS Cf. A057470, A057473. Sequence in context: A044242 A044623 A063345 * A208294 A039442 A063324 Adjacent sequences:  A080698 A080699 A080700 * A080702 A080703 A080704 KEYWORD easy,nonn AUTHOR Cino Hilliard, Mar 04 2003 STATUS approved

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

Last modified June 16 15:56 EDT 2021. Contains 345063 sequences. (Running on oeis4.)