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A100837 Numbers n such that n^n+4 is prime. +0
1
0, 1, 3, 7, 43 (list; graph; listen)
OFFSET

1,3

COMMENT

From a post in [primeNumbers]

Here we interpret 0^0 as 1.

MATHEMATICA

For[n = 1, n < 1000, n++, If[ PrimeQ[n^n + 4], Print[n]]] - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Apr 02 2006

PROGRAM

(PARI) f1(n, a) = for(x=0, n, y=x^x+a; if(ispseudoprime(y), print1(y", ")))

CROSSREFS

Sequence in context: A101412 A019018 A018993 this_sequence A106965 A141304 A101208

Adjacent sequences: A100834 A100835 A100836 this_sequence A100838 A100839 A100840

KEYWORD

hard,more,nonn

AUTHOR

Cino Hilliard (hillcino368(AT)gmail.com), Jan 07 2005

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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