The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A057473 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing all changes.

A057473

Let p(i) =i-th prime, let twin(n) = (P,Q) be n-th pair of twin primes; sequence gives p(Q).
(history; published version)

#5 by Charles R Greathouse IV at Thu Nov 21 12:47:25 EST 2013

MATHEMATICA

Prime[#]&/@Transpose[Select[Partition[Prime[Range[300]], 2, 1], Last[#]- First[#] == 2&]][[2]] (* From _Harvey P. Dale, _, Nov 29 2011 *)

Discussion

Thu Nov 21

12:47

OEIS Server: https://oeis.org/edit/global/2062

#4 by Russ Cox at Sat Mar 31 10:30:31 EDT 2012

AUTHOR

_James A. Sellers (sellersj(AT)math.psu.edu), _, Sep 11 2000

Discussion

Sat Mar 31

10:30

OEIS Server: https://oeis.org/edit/global/639

#3 by Harvey P. Dale at Tue Nov 29 19:31:18 EST 2011

STATUS

editing

approved

#2 by Harvey P. Dale at Tue Nov 29 19:31:08 EST 2011

MATHEMATICA

Prime[#]&/@Transpose[Select[Partition[Prime[Range[300]], 2, 1], Last[#]- First[#] == 2&]][[2]] (* From Harvey P. Dale, Nov 29 2011 *)

STATUS

approved

editing

#1 by N. J. A. Sloane at Fri May 16 03:00:00 EDT 2003

NAME

Let p(i) =i-th prime, let twin(n) = (P,Q) be n-th pair of twin primes; sequence gives p(Q).

DATA

11, 17, 41, 67, 127, 191, 283, 367, 563, 599, 797, 877, 1087, 1171, 1217, 1447, 1523, 1741, 1847, 2081, 2351, 2909, 3019, 3299, 3761, 4153, 4421, 4567, 4787, 4943, 6229, 6323, 6361, 6661, 6863, 8117, 8233, 8389, 8527, 8761, 9319, 10009, 10457, 10589

OFFSET

1,1

EXAMPLE

The 3rd pair of twin primes is twin(3) = (11,13), so a(3) = p(13) = 41.

CROSSREFS

A057470.

KEYWORD

nonn

AUTHOR

James A. Sellers (sellersj(AT)math.psu.edu), Sep 11 2000

STATUS

approved