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Search: id:A058009
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| A058009 |
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a(n) is obtained by applying the map k -> prime(k) n times, starting at n. |
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+0
1
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| 2, 5, 31, 277, 5381, 87803, 2269733, 50728129, 1559861749, 64988430769, 2428095424619
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OFFSET
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1,1
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EXAMPLE
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a(3) is 31 because the third prime is 5, the fifth prime is 11 and for the 3rd interation, the eleventh prime is 31.
To get a(4): 4 -> 7 -> 17 -> 59 -> 277.
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MATHEMATICA
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Table[ Nest[ Prime, n, n ], {n, 1, 11} ]
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CROSSREFS
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Sequence in context: A119242 A068145 A032112 this_sequence A097396 A056788 A091859
Adjacent sequences: A058006 A058007 A058008 this_sequence A058010 A058011 A058012
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KEYWORD
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nonn
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AUTHOR
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Robert G. Wilson v (rgwv(AT)rgwv.com), Nov 13 2000
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EXTENSIONS
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Edited by N. J. A. Sloane (njas(AT)research.att.com), Oct 30 2008 at the suggestion of R. J. Mathar
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