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

Sequence in context: A368036 A241515 A070334 * A325267 A241544 A208716

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