# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a168387 Showing 1-1 of 1 %I A168387 #2 Mar 31 2012 14:00:43 %S A168387 8,1,0,16,4,19,22,31,24,42,142,239,1042,1239,2389,10389,310589, %T A168387 1310589,1000001310589,1000000000000000000000001000001310589, %U A168387 1000001000000000000000000000001000001310589 %N A168387 a(n) = the smallest number whose Spanish name contains n distinct letters of the alphabet. 2<=n<=22 %C A168387 The letters f, g, h, j, k, ss +-, and w are unused. %C A168387 "ch" and "ll" are each one letter %C A168387 Table of names for a(n) %C A168387 .n..name.............................................letters used %C A168387 .-------------------------------------------------------- %C A168387 2. Ocho...............................................o ch %C A168387 3. Uno................................................uno %C A168387 4. Cero...............................................cero %C A168387 5. Dieciseis .........................................diecs %C A168387 6. Cuatro.............................................cuatro %C A168387 7. Diecinueve.........................................diecnuv %C A168387 8. Veintidos..........................................veintdos %C A168387 9. Treinta y uno......................................treinayuo %C A168387 10. Veinticuatro.......................................veintcuaro %C A168387 11. Cuarenta y dos.....................................cuarentydos %C A168387 12. Ciento cuarenta y dos..............................cientouaryds %C A168387 13. Doscientos treinta y nueve.........................doscientrayuv %C A168387 14. Mil cuarenta y dos.................................milcuarentydos %C A168387 15. Mil doscientos treinta y nueve.....................mildoscentrayuv %C A168387 16. Dos mil trescientos ochenta y nueve................dosmiltrecchnayuv %C A168387 17. Diez mil trescientos ochenta y nueve...............diezmltrscnochayuv %C A168387 18. Trescientos diez mil quinientos ochenta y nueve....trescinodzmlquchayv %C A168387 19. Un millon trescientos diez mil quinientos ........lltrescinodzmlquchayv %C A168387 ....ochenta y nueve %C A168387 20. Un billon trescientos diez mil.....................btrescinodzmlquchayv %C A168387 ....quinientos ochenta y nueve %C A168387 21. Un sextillon un billon trescientos ................xbtrescinodzmlquchayv %C A168387 ....diez mil quinientos ochenta y nueve %C A168387 22. Un septillon un sextillon un billon trescientos....pxbtrescinodzmlquchayv %C A168387 ....diez mil quinientos ochenta y nueve %e A168387 a(6) = 4, because "cuatro" contains six distinct letters of the alphabet. %Y A168387 Cf. A168137 (American English version) %K A168387 fini,full,nonn,word %O A168387 2,1 %A A168387 _Claudio Meller_, Nov 24 2009 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE