A074284 - OEIS

%I #5 Oct 02 2013 15:47:19

%S 0,1,6,8,9,11,28,55,33,17,78,90,21,87,240,134,81,89,170,366,153,35,

%T 396,568,109,209,582,314,285,303,496,960,303,269,1242,816,57,379,1572,

%U 944,483,505,638,1818,837,71,1752,2244,542,957,1698,890,729,1395,2492,2884

%N Sum of the aliquot divisors of n-th triangular number.

%H T. D. Noe, <a href="/A074284/b074284.txt">Table of n, a(n) for n=1..1000</a>

%e a(6)=11 because sum of aliquot divisors of 6th triangular number(i.e. 21) is 1+3+7=11.

%K nonn

%O 1,3

%A _Shyam Sunder Gupta_, Sep 21 2002