A259921 a(n) is the smallest positive integer > a(n-1) with exactly n letters when written in Spanish.

1, 3, 5, 15, 30, 40, 50, 103, 105, 115, 130, 140, 150, 204, 214, 240, 250, 316, 317, 325

Offset

3,2

Comments

a(6) = 15 = "quince" (6 letters); 4 = "cuatro" also has 6 letters but is smaller than 5 = a(5) and this sequence is strictly increasing.

Spaces are not counted, so, e.g., "ciento tres" and "doscientos cuatro" are treated as a 10-letter word and a 16-letter word, respectively.

Links

Table of n, a(n) for n=3..22.

Wikipedia, Anexo:Nombres de los números en español

Example

a( 3) =   1 for the  3-letter word "uno";
a( 4) =   3 for the  4-letter word "tres";
a( 5) =   5 for the  5-letter word "cinco";
a( 6) =  15 for the  6-letter word "quince";
a( 7) =  30 for the  7-letter word "treinta";
a( 8) =  40 for the  8-letter word "cuarenta";
a( 9) =  50 for the  9-letter word "cincuenta";
a(10) = 103 for the 10-letter word "cientotres";
...
a(16) = 204 for the 16-letter word "doscientoscuatro";
....

Crossrefs

Cf. A084390 (this sequence for English), A161353 (this sequence without the increasing condition).

Sequence in context: A018454 A126087 A148498 * A292689 A286521 A127978

Adjacent sequences: A259918 A259919 A259920 * A259922 A259923 A259924

Keyword

nonn,word,less

Author

Rodolfo Kurchan, Jul 08 2015

Status

approved