login
A161353
Smallest natural number requiring n letters in Spanish.
2
1, 3, 5, 4, 14, 40, 16, 17, 25, 24, 35, 34, 44, 54, 125, 124, 135, 134, 144, 154, 235, 234, 244, 254, 354, 444, 454, 1354, 1444, 1454, 2354, 2444, 2454, 3454, 4444, 4454, 14454, 16444, 16454, 17454, 24444, 24454, 34444, 34454, 44454, 54454, 124444, 124454
OFFSET
3,2
EXAMPLE
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.
CROSSREFS
Cf. A080777 (English).
Sequence in context: A201271 A324779 A167808 * A360449 A182045 A133758
KEYWORD
nonn,word
AUTHOR
Claudio Meller, Jun 07 2009
EXTENSIONS
Offset corrected to 3 by Michel Marcus, Jul 09 2015
a(30)-a(34) corrected by Álvar Ibeas, Sep 18 2020
STATUS
approved