A164804 a(n) = smallest number which has in its Spanish name the letter "u" in the n-th position, or -1 if no such number exists.

1, 4, -1, 1001, 50, -1, 19, 24, 31, 34, 44, 54, 119, 124, 131, 134, 144, 154, 231, 234, 244, 254, 354, 444, 454

Offset

1,2

Comments

a(1)=Uno, a(2)= cUatro, a(4)= mil Uno

Links

Table of n, a(n) for n=1..25.

Crossrefs

Sequence in context: A094337 A345313 A038019 * A036115 A056582 A167891

Adjacent sequences: A164801 A164802 A164803 * A164805 A164806 A164807

Keyword

word,sign

Author

Claudio Meller, Aug 26 2009

Status

approved