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A121233 Palindromes whose ten's complements are squares. 0

%I

%S 1,6,9,99,424,676,919,999,4224,5775,9559,9999,57975,63136,91719,93439,

%T 99999,951159,999999,1196911,4402044,6359536,6944496,9173719,9329239,

%U 9959599,9977799,9999999,67144176,99188199,99999999,577080775,915525519

%N Palindromes whose ten's complements are squares.

%C Known primes occurring in the sequence are 919, 1196911, 9173719 and 9329239.

%e 424 is a term because it's palindromic and 10^3-424 = 576 = 24^2.

%K base,nonn

%O 1,2

%A _Jason Earls_, Aug 21 2006

%E More terms from _R. J. Mathar_, Sep 02 2006

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Last modified August 5 15:11 EDT 2021. Contains 346471 sequences. (Running on oeis4.)