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Smallest natural number requiring n letters in Spanish.
2

%I #15 Sep 20 2020 01:12:59

%S 1,3,5,4,14,40,16,17,25,24,35,34,44,54,125,124,135,134,144,154,235,

%T 234,244,254,354,444,454,1354,1444,1454,2354,2444,2454,3454,4444,4454,

%U 14454,16444,16454,17454,24444,24454,34444,34454,44454,54454,124444,124454

%N Smallest natural number requiring n letters in Spanish.

%H Álvar Ibeas, <a href="/A161353/b161353.txt">Table of n, a(n) for n = 3..100</a>

%H Wikipedia, <a href="https://es.wikipedia.org/wiki/Anexo:Nombres_de_los_n%C3%BAmeros_en_espa%C3%B1ol">Anexo:Nombres de los números en español</a>

%e 1=uno (3 letters), 3=tres (4 letters), 5=cinco (5 letters), 4=cuatro (6 letters), 14= catorce (7 letters), 40=cuarenta (8 letters), 16=dieciséis (9 letters), 17= diecisiete (10 letters), etc.

%Y Cf. A080777 (English).

%K nonn,word

%O 3,2

%A _Claudio Meller_, Jun 07 2009

%E Offset corrected to 3 by _Michel Marcus_, Jul 09 2015

%E a(30)-a(34) corrected by _Álvar Ibeas_, Sep 18 2020