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A098463 Numbers n such that A055869(n)=(n+1)^n - n^n is prime. 1
2, 3, 5, 7, 167 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

The next term is > 5000.

EXAMPLE

a(2)=3 because (3+1)^3-3^3=4^3-3^3=64-27=37 is prime.

MATHEMATICA

Select[Range[300], PrimeQ[(#+1)^#-#^#]&] (*From Vladimir Joseph Stephan Orlovsky, Mar 03 2011*)

CROSSREFS

Cf. A055869 (n+1)^n-n^n, A085682 n^n-(n-1)^n is prime.

Sequence in context: A046705 A054218 A075048 * A064155 A069803 A083184

Adjacent sequences:  A098460 A098461 A098462 * A098464 A098465 A098466

KEYWORD

hard,nonn

AUTHOR

Hugo Pfoertner (hugo(AT)pfoertner.org), Sep 14 2004

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Last modified February 15 13:14 EST 2012. Contains 205792 sequences.