A008509 and A089717 are duplicates

[Klaus Brockhaus]

The name of A089717 was misleading. I just sent an edited and corrected version to njas:

%S A089717 0,1,3,6,10,15,21,28,36,45,66,253,561,990,1540,2211,3003,3916,4950,5151,
%T A089717 6216,7381,8646,10011,11476,13041,14706,16471,18336,20503,22578,24753,
%U A089717 27028,29403,31878,34453,37128,39903,42778,46056,49141,52326,55611,58996
%N A089717 Triangular numbers with palindromic index.
%C A089717 A000217(k) where k is a palindrome.
..........

Klaus

Lambert.Klasen at gmx.net wrote:
> 
> Hello,
> 
> by their names
> 
> A008509 and A089717
> 
> are duplicates.
> 
> While the values of the latter seem to follow something entirely
> different.