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A165812
Ultraprimorials: a(n) = p#^p#.
3
1, 4, 46656, 205891132094649000000000000000000000000000000
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
KEYWORD
easy,nonn
AUTHOR
EXTENSIONS
Slightly edited by R. J. Mathar, Sep 29 2009
STATUS
approved