%I
%S 3,2,3,3,2,2,6,2,1,4,7,0,4,4,12,5,6,2,3,2,6,3,6,2,2,4,3,2,5,0,3,2,1,4,
%T 3,1,10,1,4,0
%N Number of palindromic triangular numbers with n digits.
%H P. De Geest, <a href="http://www.worldofnumbers.com/triangle.htm">Palindromic Triangulars</a>
%e a(10) = 4: 1264114621, 1634004361, 5289009825, 6172882716.
%Y Cf. A000217, A003098, A008509, A008510.
%K nonn,base,hard
%O 1,1
%A _Patrick De Geest_, Apr 15 2000
