A137700 Smallest k such that the k-th prime has exactly n distinct representations as arithmetic mean of two primes.

1, 3, 5, 7, 12, 16, 24, 20, 26, 41, 33, 44, 51, 55, 54, 79, 64, 74, 69, 88, 121, 92, 101, 109, 113, 116, 124, 155, 152, 137, 144, 140, 160, 174, 165, 209, 197, 195, 201, 200, 206, 218, 251, 238, 229, 239, 230, 244, 236, 267, 295, 281, 299, 301, 307, 312, 313, 325

Offset

0,2

Comments

A071681(a(n))=n and A071681(m)<>n for m<a(n), A000040(a(n))=A126204(n).

Links

Table of n, a(n) for n=0..57.

Crossrefs

Cf. A000040, A071681, A126204.

Sequence in context: A389539 A241515 A070334 * A382819 A325267 A241544

Adjacent sequences: A137697 A137698 A137699 * A137701 A137702 A137703

Keyword

nonn

Author

Reinhard Zumkeller, Feb 07 2008

Extensions

Corrected description suggested by Zak Seidov, May 16 2008

Status

approved