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A101405
a(n) = n^(pi(n-1)).
1
1, 1, 3, 16, 25, 216, 343, 4096, 6561, 10000, 14641, 248832, 371293, 7529536, 11390625, 16777216, 24137569, 612220032, 893871739, 25600000000, 37822859361, 54875873536, 78310985281, 2641807540224, 3814697265625, 5429503678976
OFFSET
1,3
COMMENTS
pi(n) (A000720) is the number of prime numbers less than or equal to n.
EXAMPLE
a(5)=25 because a(5)= 5^(pi(4))= 5^2= 25
If n=10, m=4, so 10^4 = 10000.
MATHEMATICA
Table[n^PrimePi[n - 1], {n, 30}]
CROSSREFS
Cf. A000720.
Sequence in context: A153723 A091273 A256931 * A335308 A193367 A322413
KEYWORD
nonn
AUTHOR
Parthasarathy Nambi, Jan 15 2005
EXTENSIONS
Extended by Ray Chandler, Jan 18 2005
Edited by N. J. A. Sloane at the suggestion of Andrew S. Plewe, Jun 16 2007
STATUS
approved