A164812 - OEIS

A164812

a(n) = smallest number which has in its Spanish name the letter "v" in the n-th position,or -1 if no such number exists.

%I #2 Mar 31 2012 14:00:43

%S 20,-1,90,9,-1,1090,120,3020,19,29,220,39,49,59,119,129,409,139,149,

%T 159,329,239,249,259,359,449,459,1359,1449,1459,2359,2449,2459,3459,

%U 4449,4459

%N a(n) = smallest number which has in its Spanish name the letter "v" in the n-th position,or -1 if no such number exists.

%C a(1)=Veinte, a(3)=noVenta, a(4)=nueVe

%K word,sign

%O 1,1

%A _Claudio Meller_, Aug 26 2009