OFFSET
1,3
EXAMPLE
100180081 is a square (10009^2). The number of digits in 100180081 is 9, also a square (3^2).
PROG
(PARI) isok(n) = issquare(n) && issquare(length(Str(n))); \\ Michel Marcus, Aug 28 2013
CROSSREFS
KEYWORD
nonn,base,less
AUTHOR
Dominick Cancilla, Aug 02 2010
STATUS
approved