OFFSET
1,2
COMMENTS
Conjecture: no term is zero.
EXAMPLE
a(4) = 4489 = 67^2, 4= 2^2. a(12) = 120000000004= 2^2*30000000001, prime signature: p^2*q.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Aug 30 2003
EXTENSIONS
Corrected and extended by Sascha Kurz, Sep 22 2003
STATUS
approved