Search: id:A002779
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%I A002779 M3371 N1358
%S A002779 0,1,4,9,121,484,676,10201,12321,14641,40804,44944,69696,94249,698896,
%T A002779 1002001,1234321,4008004,5221225,6948496,100020001,102030201,
%U A002779 104060401,121242121,123454321,125686521,400080004,404090404,522808225
%N A002779 Palindromic squares.
%D A002779 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A002779 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A002779 G. J. Simmons, Palindromic powers, J. Rec. Math., 3 (No. 2, 1970), 93-98.
%D A002779 G. J. Simmons, On palindromic squares of non-palindromic numbers, J. 
               Rec. Math., 5 (No. 1, 1972), 11-19.
%H A002779 P. De Geest, <a href="http://www.worldofnumbers.com/square.htm">Palindromic 
               Squares</a>
%H A002779 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               PalindromicNumber.html">Link to a section of The World of Mathematics.</
               a>
%e A002779 676 is included because it is both a perfect square and a palindrome.
%t A002779 PalindromeQ = ((# // IntegerDigits // Reverse // FromDigits) == #) &; 
               Select[Table[n^2, {n, 0, 10000}], PalindromeQ] - Herman Beeksma (herman(AT)beeksma.nl), 
               Jul 14 2005
%Y A002779 Cf. A002778, A002113.
%Y A002779 Sequence in context: A115667 A158642 A131760 this_sequence A028817 A057136 
               A048411
%Y A002779 Adjacent sequences: A002776 A002777 A002778 this_sequence A002780 A002781 
               A002782
%K A002779 nonn,base,nice,easy
%O A002779 1,3
%A A002779 N. J. A. Sloane (njas(AT)research.att.com).

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