OFFSET
1,3
EXAMPLE
32^2 is 1024, which has 2^2 = 4 digits.
PROG
(R) sq=(1:10)^2; sqsqd=c(); i=0; while(length(sqsqd)<500) { if(floor(log10(i^2)+1)%in%sq) sqsqd=c(sqsqd, i); i=i+1 }
CROSSREFS
KEYWORD
nonn,easy,base
AUTHOR
Kevin L. Schwartz and Christian N. K. Anderson, Mar 23 2013
STATUS
approved