|
%I #7 Oct 16 2019 23:46:17
%S 3,6,66,5995,15051,15199896744769899151
%N Palindromic triangular numbers arising from A050721 and A083571.
%H P. De Geest, <a href="http://www.worldofnumbers.com/subtria.htm">Subsets of palindromic triangulars</a>
%Y Cf. A008509, A008510, A050721.
%K nonn,base,hard
%O 1,1
%A _Patrick De Geest_, Sep 15 1999
|
