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%I #2 Mar 31 2012 14:00:43
%S -1,3,0,40,4,-1,1040,23,3003,33,24,53,34,44,54,133,124,153,134,144,
%T 154,253,234,244,254,354,444,454,1354,1444,1454,2354,2444,2454,3454,
%U 4444,4454
%N a(n) = smallest number which has in its Spanish name the letter "r" in the n-th position,or -1 if no such number exists.
%C a(2)=tRes, a(3)=ceRo, a(4)= cuaRenta
%K word,sign
%O 1,2
%A _Claudio Meller_, Aug 26 2009
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