A144567 Primes of the form: smallest prime factor of n + largest prime factor of n, n > 1.

5, 7, 5, 5, 7, 13, 5, 7, 19, 5, 7, 13, 5, 7, 5, 31, 7, 13, 19, 5, 7, 43, 13, 7, 5, 7, 19, 5, 13, 31, 61, 7, 13, 19, 73, 5, 7, 13, 7, 5, 43, 19, 31, 13, 7, 5, 13, 7, 103, 19, 109, 5, 13, 31, 61, 19, 7, 13, 43, 7, 13, 7, 19, 139, 73, 5, 31, 151, 7, 19, 13, 7, 5, 43, 13, 19, 31, 13, 61, 181, 7

Offset

1,1

Comments

This sequence is a reordering (with duplication) of A006512.

Links

Table of n, a(n) for n=1..81.

Crossrefs

Cf. A002808, A006512, A119689.

Sequence in context: A122271 A011205 A167133 * A372204 A215732 A010718

Adjacent sequences: A144564 A144565 A144566 * A144568 A144569 A144570

Keyword

nonn,easy,less

Author

Juri-Stepan Gerasimov, Jan 04 2009

Extensions

Comment, correction, and extension by Charles R Greathouse IV, Mar 29 2010

Status

approved