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Search: id:A165812
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| A165812 |
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Ultraprimorials: a(n) = p#^p#. |
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+0
1
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| 1, 4, 46656, 205891132094649000000000000000000000000000000
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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The n-th Primorial raised to its own power.
Terms from a(4) on have 488, 7770, 134461 and 2913994 digits and are too large to be listed explicitly.
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FORMULA
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a(n) = A000312(A002110(n)) . [R. J. Mathar, Sep 29 2009]
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MAPLE
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P:=proc(i) local a, n; a:=1; print(1); for n from 1 by 1 to i do a:=a*ithprime(n); print(a^a); od; end: P(10);
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CROSSREFS
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Cf. A002110, A046882
Sequence in context: A053937 A132638 A046882 this_sequence A074318 A102200 A066544
Adjacent sequences: A165809 A165810 A165811 this_sequence A165813 A165814 A165815
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KEYWORD
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easy,nonn
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AUTHOR
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Paolo P. Lava & Giorgio Balzarotti (ppl(AT)spl.at), Sep 28 2009
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EXTENSIONS
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Slightly edited by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 29 2009
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