A137800 Consider the first run of composites that contains at least two numbers whose largest prime factor is prime(n), n >= 2. a(n) is the second of these numbers.

27, 125, 147, 539, 2197, 2992, 3249, 50255, 11774, 15717, 62271, 265680, 172000, 34122, 1133458, 2313744, 1060851, 332387, 1334232, 404931, 1388583, 1357299, 15800793, 5516390, 66896138, 11962935, 6085090, 129761884, 43216624, 90972640

Offset

2,1

Comments

For comments, examples and programs see sequence A137799, which gives the first of these numbers.

Links

Table of n, a(n) for n=2..31.

Crossrefs

Cf. A137799.

Sequence in context: A275430 A145555 A293894 * A125497 A179145 A369118

Adjacent sequences: A137797 A137798 A137799 * A137801 A137802 A137803

Keyword

nonn

Author

Enoch Haga, Feb 11 2008

Extensions

Edited and a(18) through a(31) added by Klaus Brockhaus, Feb 15 2008

Status

approved