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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.
2
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.
CROSSREFS
Cf. A137799.
Sequence in context: A275430 A145555 A293894 * A125497 A179145 A369118
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