A160938 - OEIS

%I #2 Mar 31 2012 14:00:41

%S 2,6,12,20,30,42,56,72,9,20,33,48,65,84,105,128,153,180,38,60,84,110,

%T 138,168,200,234,270,308,87,120,155,192,231,272,315,360,407,456,156,

%U 200,246,294,344,396,450,506,564,624,245,300,357,416,477,540,605,672,741

%N a(n)= n * digital sum(n+1)

%C a(8)=8xds(9)=8x9=72; a(15)=15xds(16)=15*7=105; a(26)=26xds(27)=26x9=234

%K nonn,base

%O 1,1

%A _Claudio Meller_, May 30 2009