%I #5 Mar 30 2012 18:35:28
%S 1,3,6,10,15,21,28,36,45,55,66,78,91,105,120,136,153,171,191,212,234,
%T 257,281,306,332,359,387,416,446,477,509,542,576,611,647,684,723,763,
%U 804,846,889,933,978,1024,1071,1119,1168,1218,1269,1321,1374,1428,1483,1540,1598
%N Index of 9^n within sequence of numbers of form 8^i*9^j.
%K nonn
%O 1,2
%A _David W. Wilson_