%I A006029
%S A006029 1,2,17,21,336
%N A006029 Numbers n such that n-th tetrahedral number n(n+1)(n+2)/6 is palindromic.
%H A006029 P. De Geest, <a href="http://www.worldofnumbers.com/tetra.htm">Palindromic 
               Tetrahedrals</a>
%Y A006029 Cf. A006030.
%Y A006029 Sequence in context: A042055 A075683 A157191 this_sequence A126961 A106622 
               A040992
%Y A006029 Adjacent sequences: A006026 A006027 A006028 this_sequence A006030 A006031 
               A006032
%K A006029 nonn
%O A006029 1,2
%A A006029 Patrick De Geest (pdg(AT)worldofnumbers.com)