%I A002778 M0907 N0342
%S A002778 0,1,2,3,11,22,26,101,111,121,202,212,264,307,836,1001,1111,2002,2285,
%T A002778 2636,10001,10101,10201,11011,11111,11211,20002,20102,22865,24846,
%U A002778 30693,100001,101101,110011,111111,200002,798644,1000001,1001001
%N A002778 Numbers whose square is a palindrome.
%D A002778 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A002778 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A002778 G. J. Simmons, Palindromic powers, J. Rec. Math., 3 (No. 2, 1970), 93-98.
%D A002778 G. J. Simmons, On palindromic squares of non-palindromic numbers, J. 
               Rec. Math., 5 (No. 1, 1972), 11-19.
%D A002778 M. Keith, Classification and enumeration of palindromic squares, J. Rec. 
               Math., 22 (No. 2, 1990), 124-132.
%H A002778 P. De Geest, <a href="http://www.worldofnumbers.com/square.htm">Palindromic 
               Squares</a>
%H A002778 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               PalindromicNumber.html">Link to a section of The World of Mathematics.</
               a>
%Y A002778 Cf. A002779, A002113.
%Y A002778 Sequence in context: A097895 A023182 A049083 this_sequence A028816 A128921 
               A118595
%Y A002778 Adjacent sequences: A002775 A002776 A002777 this_sequence A002779 A002780 
               A002781
%K A002778 base,nonn,nice,easy
%O A002778 1,3
%A A002778 N. J. A. Sloane (njas(AT)research.att.com).
%E A002778 More terms from Patrick De Geest (pdg(AT)worldofnumbers.com).