OFFSET
2,1
EXAMPLE
8 = 2^3 hence a(8) = 80062991= 431^3 having the same prime signature p^3 where p is a prime.
CROSSREFS
KEYWORD
base,nonn,easy
AUTHOR
Amarnath Murthy, Aug 27 2003
EXTENSIONS
More terms from David Wasserman, Mar 22 2005
STATUS
approved