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Search: id:A057135
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%I A057135
%S A057135 0,1,2,3,11,22,101,111,121,202,212,1001,1111,2002,10001,10101,10201,
%T A057135 11011,11111,11211,20002,20102,100001,101101,110011,111111,200002,
%U A057135 1000001,1002001,1010101,1011101,1012101,1100011,1102011,1110111
%N A057135 Palindromes whose square is a palindrome; also palindromes whose sum 
               of squares of digits is less than 10.
%H A057135 P. De Geest, <a href="http://www.worldofnumbers.com/subsquar.htm">Subsets 
               of Palindromic Squares</a>
%F A057135 a(n) = sqrt(A057135(n))
%e A057135 121 is OK since 121^2=14641 is also a palindrome
%Y A057135 Cf. A057136, A128921.
%Y A057135 Sequence in context: A028816 A128921 A118595 this_sequence A104075 A070174 
               A080153
%Y A057135 Adjacent sequences: A057132 A057133 A057134 this_sequence A057136 A057137 
               A057138
%K A057135 base,nonn
%O A057135 1,3
%A A057135 Henry Bottomley (se16(AT)btinternet.com), Aug 12 2000

    
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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.


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