A087506 Primes in A087461.

5, 13, 71, 127, 163, 197, 227, 307, 317, 409, 523, 587, 593, 761, 857, 947, 1151, 1321, 1373, 1783, 1861, 1973, 2039, 2273, 2417, 2543, 3049, 3083, 3457, 3463, 3697, 3739, 4093, 4243, 4253, 4463, 4483, 4519, 4583, 4657, 4723, 4751, 5171, 5179, 5519, 5591

Offset

1,1

Comments

Primes of the form (prime(k)+prime(2k))/2.

Links

Table of n, a(n) for n=1..46.

Mathematica

Select[Table[(Prime[n]+Prime[2n])/2, {n, 500}], PrimeQ] (* Harvey P. Dale, May 06 2013 *)

Crossrefs

Cf. A087461.

Sequence in context: A156101 A093118 A359690 * A068487 A075063 A100209

Adjacent sequences: A087503 A087504 A087505 * A087507 A087508 A087509

Keyword

nonn

Author

Ray Chandler, Sep 10 2003

Status

approved