A178656 The positions of products of 2 primes that are the differences of 2 primes in A002808.

1, 2, 4, 5, 8, 13, 15, 21, 22, 35, 38, 41, 59, 61, 63, 87, 90, 92, 107, 110, 136, 144, 155, 158, 165, 166, 215, 227, 232, 235, 240, 252, 254, 283, 286, 306, 316, 330, 360, 363, 366, 386, 398, 408, 435, 437, 438, 459, 467, 483, 507, 530, 557, 560, 568, 571, 589

Offset

1,2

Comments

The positions of A124588(m)*A124588(k) in A002808.

Links

Table of n, a(n) for n=1..57.

Formula

A002808(a(n))=A124588(m)*A124588(k).

Crossrefs

Sequence in context: A023745 A217136 A294944 * A085443 A164571 A238589

Adjacent sequences: A178653 A178654 A178655 * A178657 A178658 A178659

Keyword

nonn

Author

Juri-Stepan Gerasimov, Jun 01 2010

Extensions

Corrected (254 inserted) by R. J. Mathar, Jun 04 2010

Status

approved