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A096059 Numbers n such that for all k, (n^k-1)/(n-1) is not prime. 1
9, 25, 32, 49, 64, 81, 121, 125, 144 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Indices of 0 in A084740.
Possibly a subset of A001597.
The first unknown value is n=152, checked up to k = prime(1100). - Derek Orr, Nov 29 2014
It is known 169, 216, 225, 243, 289, 324, 343 are also members of this sequence. - Derek Orr, Nov 29 2014
LINKS
CROSSREFS
Sequence in context: A270337 A339842 A068529 * A326742 A246328 A065772
KEYWORD
nonn,more
AUTHOR
Amarnath Murthy, Jun 17 2004
EXTENSIONS
Edited by Don Reble, Mar 19 2007
STATUS
approved

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Last modified March 19 04:58 EDT 2024. Contains 370952 sequences. (Running on oeis4.)