OFFSET
1,2
EXAMPLE
a(4) = 4^4 = 256, a(123) = (1^1)*(2^2)*(3^3) = 108.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, May 06 2001
EXTENSIONS
Corrected and extended by Matthew Conroy, May 13 2001
STATUS
approved