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Search: id:A058912
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| A058912 |
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Numbers n such that n^n + n - 1 is prime. |
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+0
3
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OFFSET
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1,1
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COMMENT
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Except for the first term all terms are of the form 3k or 3k+1. There is no further term up to 2300. - Farideh Firoozbakht (mymontain(AT)yahoo.com), Oct 18 2006
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EXAMPLE
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a(2)=3 because 3^3+(3-1)=29
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MATHEMATICA
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Do[ If[ PrimeQ[ n^n + n - 1], Print[n]], {n, 1, 750} ]
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CROSSREFS
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Cf. (n^n+1+1) A058911.
Cf. A058911.
Sequence in context: A090476 A127941 A140555 this_sequence A040145 A142955 A088790
Adjacent sequences: A058909 A058910 A058911 this_sequence A058913 A058914 A058915
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KEYWORD
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nonn
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AUTHOR
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Felice Russo (felice.russo(AT)katamail.com), Jan 10 2001
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EXTENSIONS
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One more term from Farideh Firoozbakht (mymontain(AT)yahoo.com), Oct 18 2006
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