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A134985
Numbers n such that (n-1)^(n+1) - n^n is prime.
1
5, 6, 7, 13, 17, 171, 174, 378
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OFFSET
1,1
COMMENTS
No more terms up to 10000. -
Rick L. Shepherd
, May 16 2008
LINKS
Table of n, a(n) for n=1..8.
EXAMPLE
12^14 - 13^13 = 981043357956611, which is prime, so 13 is in the list.
MATHEMATICA
Select[Table[n, {n, 5, 400}], PrimeQ[(#-1)^(#+1)-#^#]&] (*
Vladimir Joseph Stephan Orlovsky
, Mar 03 2011*)
CROSSREFS
Sequence in context:
A273929
A067531
A031029
*
A371029
A111018
A326132
Adjacent sequences:
A134982
A134983
A134984
*
A134986
A134987
A134988
KEYWORD
hard
,
more
,
nonn
AUTHOR
Carl R. White
, Feb 05 2008
STATUS
approved
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Last modified August 18 22:11 EDT 2024. Contains 375284 sequences. (Running on oeis4.)