The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A168387 a(n) = the smallest number whose Spanish name contains n distinct letters of the alphabet. 2<=n<=22 0

%I

%S 8,1,0,16,4,19,22,31,24,42,142,239,1042,1239,2389,10389,310589,

%T 1310589,1000001310589,1000000000000000000000001000001310589,

%U 1000001000000000000000000000001000001310589

%N a(n) = the smallest number whose Spanish name contains n distinct letters of the alphabet. 2<=n<=22

%C The letters f, g, h, j, k, ss +-, and w are unused.

%C "ch" and "ll" are each one letter

%C Table of names for a(n)

%C .n..name.............................................letters used

%C .--------------------------------------------------------

%C 2. Ocho...............................................o ch

%C 3. Uno................................................uno

%C 4. Cero...............................................cero

%C 5. Dieciseis .........................................diecs

%C 6. Cuatro.............................................cuatro

%C 7. Diecinueve.........................................diecnuv

%C 8. Veintidos..........................................veintdos

%C 9. Treinta y uno......................................treinayuo

%C 10. Veinticuatro.......................................veintcuaro

%C 11. Cuarenta y dos.....................................cuarentydos

%C 12. Ciento cuarenta y dos..............................cientouaryds

%C 13. Doscientos treinta y nueve.........................doscientrayuv

%C 14. Mil cuarenta y dos.................................milcuarentydos

%C 15. Mil doscientos treinta y nueve.....................mildoscentrayuv

%C 16. Dos mil trescientos ochenta y nueve................dosmiltrecchnayuv

%C 17. Diez mil trescientos ochenta y nueve...............diezmltrscnochayuv

%C 18. Trescientos diez mil quinientos ochenta y nueve....trescinodzmlquchayv

%C 19. Un millon trescientos diez mil quinientos ........lltrescinodzmlquchayv

%C ....ochenta y nueve

%C 20. Un billon trescientos diez mil.....................btrescinodzmlquchayv

%C ....quinientos ochenta y nueve

%C 21. Un sextillon un billon trescientos ................xbtrescinodzmlquchayv

%C ....diez mil quinientos ochenta y nueve

%C 22. Un septillon un sextillon un billon trescientos....pxbtrescinodzmlquchayv

%C ....diez mil quinientos ochenta y nueve

%e a(6) = 4, because "cuatro" contains six distinct letters of the alphabet.

%Y Cf. A168137 (American English version)

%K fini,full,nonn,word

%O 2,1

%A _Claudio Meller_, Nov 24 2009

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified January 27 06:18 EST 2022. Contains 350601 sequences. (Running on oeis4.)