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%I #2 Dec 05 2013 19:55:15
%S 0,0,0,1,2,3,0,0,1,2,3,4,5,0,1,2,3,4,5,6,7,8,0,1,0,1,2,3,4,0,1,2,3,4,
%T 5,6,7,8,9,10,11,12,13,14,15,16,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,0,
%U 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14
%N a(n) = n - largest prime power <= n.
%C Begins with 3 consecutive zeros. Also a(8)=a(9)=0. Question: are there any more occurrence of 2 or more consecutive zeros?
%Y Cf. A069584.
%K easy,nonn
%O 2,5
%A _Amarnath Murthy_, Mar 24 2002
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