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a(n) is the smallest number such that with the letters of the name of that number we can spell the name of n numbers smaller than a(n) in Spanish.
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%I #15 Aug 23 2018 17:00:20

%S 16,18,23,34,44,45,42,84,128,116,54,133,132,159,196,134,124,156,145,

%T 144,225,149,261,153,143,148,147,142,229,263

%N a(n) is the smallest number such that with the letters of the name of that number we can spell the name of n numbers smaller than a(n) in Spanish.

%e a(4) = 34 because with the letters of 34 (treinta y cuatro) we can spell these numbers: 1 (uno), 4 (cuatro), 11 (once) and 30 (treinta). Note that we can also write 40 cuarenta, but 40 is bigger than 34 so it does not count.

%Y Cf. A317422 (English).

%K nonn,word,more

%O 1,1

%A _Claudio Meller_, Jul 27 2018