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URL: https://oeis.org/A072179

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A072179
Numbers n such that n^(n+1) - (n+1)^n is prime.
7
3, 6, 9, 12, 44, 883, 1277
OFFSET
1,1
COMMENTS
Some of the larger entries may only correspond to probable primes.
6279 is a term. - Alexander Adamchuk, Apr 09 2007
MATHEMATICA
Do[ If[ PrimeQ[ n^(n + 1) - (n + 1)^n], Print[n]], {n, 1, 2000}]
PROG
(PARI) is(n)=ispseudoprime(n^(n+1)-(n+1)^n) \\ Charles R Greathouse IV, Feb 17 2017
CROSSREFS
Sequence in context: A277250 A083491 A086423 * A065811 A061514 A078559
KEYWORD
nonn
AUTHOR
Daniel Gronau (Daniel.Gronau(AT)gmx.de), Jun 30 2002
EXTENSIONS
Edited and extended by Robert G. Wilson v, Jul 02 2002
STATUS
approved