A057470 Let p(i) =i-th prime, let twin(n) = (P,Q) be n-th pair of twin primes; sequence gives p(P).

5, 11, 31, 59, 109, 179, 277, 353, 547, 587, 773, 859, 1063, 1153, 1201, 1433, 1499, 1723, 1823, 2063, 2341, 2897, 3001, 3259, 3733, 4133, 4397, 4549, 4759, 4933, 6217, 6311, 6353, 6653, 6841, 8101, 8221, 8377, 8513, 8747, 9293, 9973, 10433, 10559

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Example

The 3rd pair of twin primes is twin(3) = (11,13), so a(3) = p(11) = 31.

Mathematica

Prime/@Select[Partition[Prime[Range[300]], 2, 1], #[[2]]-#[[1]]==2&][[;; , 1]] (* Harvey P. Dale, May 21 2023 *)

Crossrefs

Cf. A057473.

Sequence in context: A023259 A267478 A280081 * A038580 A106088 A246010

Adjacent sequences: A057467 A057468 A057469 * A057471 A057472 A057473

Keyword

nonn

Author

Cino Hilliard, Sep 10 2000

Extensions

More terms from James A. Sellers, Sep 11 2000

Status

approved