%I #11 Dec 05 2013 19:56:16
%S 6,9,33,66,99,333,666,999,3333,6666,9999,33333,66666,99999,333333,
%T 666666,999999,3333333,6666666,9999999,33333333,66666666,99999999,
%U 333333333,444444444,555555555,666666666,777777777,888888888,999999999
%N a(n) = A084006(n)^(1/2).
%F Pattern exhibited by early terms does not continue without interruption. First disruption occurs at a(25)=444444444. Terms with k-digits exhibit the earlier pattern where (10^k-1)/9 is squarefree and k=9 is the first occurrence where (10^k-1)/9 is not squarefree. Others occur at k=18, 22, 27, 36, 42, 44, 45. - _Ray Chandler_, Aug 04 2003
%Y Cf. A084004, A084005, A084006.
%K base,nonn
%O 0,1
%A _Amarnath Murthy_ and Meenakshi Srikanth (menakan_s(AT)yahoo.com), May 23 2003
%E More terms from _Ray Chandler_, May 31 2003
%E More terms from _Ray Chandler_, Aug 04 2003