OFFSET
1,2
COMMENTS
Sequence is infinite with nontrivial terms (10^(2k+1)+2)^2 and (2*10^(2k+1)+1)^2. - Ray Chandler, Aug 03 2003
EXAMPLE
38416 is a member as 38416, 841 and 4 all are squares.
PROG
(PARI) l=listcreate(1000); for(n=0, 9, listput(l, n^2)); for(k=3, 50, for(d1=1, 9, for(n=1, length(l), for(d2=0, 9, t1=l[n]; if(t1<10^(k-2), c=d1*10^(k-1) + t1*10 + d2; if(issquare(c), listput(l, c); ); ); ); ); ); ); l
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Nov 07 2002
EXTENSIONS
Corrected and extended by Ray Chandler, Aug 03 2003
STATUS
approved