Search: id:A031880
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%I A031880
%S A031880 1,9,33,99,111,141,171,303,393,535,717,777,979,1441,1771,3003,3223,
%T A031880 3663,5335,7447,9009,9339,9999,11011,11811,11911,12121,12321,12621,
%U A031880 13531,14041,14541,14841,17671,18381,18681,19791,30303,31713,32223
%N A031880 Lucky numbers both palindromic and composite.
%Y A031880 Cf. A000959.
%Y A031880 Sequence in context: A020326 A112888 A048479 this_sequence A036543 A147269 
               A147123
%Y A031880 Adjacent sequences: A031877 A031878 A031879 this_sequence A031881 A031882 
               A031883
%K A031880 nonn
%O A031880 1,2
%A A031880 Patrick De Geest (pdg(AT)worldofnumbers.com)

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