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A165812 Ultraprimorials: a(n) = p#^p#. 3
1, 4, 46656, 205891132094649000000000000000000000000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
COMMENTS
The n-th Primorial raised to its own power.
Terms from a(4) on have 488, 7770, 134461 and 2913994 digits (A195188) and are too large to be listed explicitly.
LINKS
Eric Weisstein's World of Mathematics, Ultraprimorial
FORMULA
a(n) = A000312(A002110(n)) . [R. J. Mathar, Sep 29 2009]
MAPLE
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);
CROSSREFS
Sequence in context: A275587 A132638 A046882 * A218405 A259492 A074318
KEYWORD
easy,nonn
AUTHOR
EXTENSIONS
Slightly edited by R. J. Mathar, Sep 29 2009
STATUS
approved

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Last modified March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)