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Search: id:A140319
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| A140319 |
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a(1)=2, a(2)=3^2, a(n+1)=Pn^a(n), being Pn the nth-prime number. |
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1
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OFFSET
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0,1
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COMMENT
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Exponential primorial.
The next term is too large to include.
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EXAMPLE
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a(1)=2
a(2)=3^2=9
a(3)=5^9=1953125
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MAPLE
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P:=proc(n) local a, i; a:=2; print(a); for i from 2 by 1 to n do a:=ithprime(i)^a; print(a); od; end: P(5);
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CROSSREFS
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Cf. A002110, A049384, A139802.
Sequence in context: A049384 A132859 A103562 this_sequence A120314 A050924 A096877
Adjacent sequences: A140316 A140317 A140318 this_sequence A140320 A140321 A140322
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KEYWORD
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easy,nonn,bref
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AUTHOR
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Paolo P. Lava & Giorgio Balzarotti (ppl(AT)spl.at), May 26 2008
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