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A100837
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Numbers n such that n^n+4 is prime.
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2
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OFFSET
| 1,3
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COMMENTS
| From a post in [primeNumbers]
Here we interpret 0^0 as 1.
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MATHEMATICA
| For[n = 1, n < 1000, n++, If[ PrimeQ[n^n + 4], Print[n]]] - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Apr 02 2006
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PROG
| (PARI) f1(n, a) = for(x=0, n, y=x^x+a; if(ispseudoprime(y), print1(y", ")))
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CROSSREFS
| Sequence in context: A143684 A156893 A050639 * A019011 A036842 A041349
Adjacent sequences: A100834 A100835 A100836 * A100838 A100839 A100840
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KEYWORD
| hard,more,nonn
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AUTHOR
| Cino Hilliard (hillcino368(AT)gmail.com), Jan 07 2005
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EXTENSIONS
| 1 more term. Next term exceeds 15000. Sean A. Irvine (sairvin(AT)xtra.co.nz), Sep 09 2009
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