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A164807
a(n) = smallest number which has in its Spanish name the letter "t" in the n-th position,or -1 if no such number exists.
0
3, -1, 14, 4, 20, 30, 23, 50, 17, 24, 53, 34, 44, 54, 117, 124, 153, 134, 144, 154, 253, 234, 244, 254, 354, 444, 454
OFFSET
1,1
COMMENTS
a(1)=Tres, a(3)=caTorce, a(4)=cuaTro
CROSSREFS
Sequence in context: A288018 A288441 A288048 * A283285 A283374 A202039
KEYWORD
word,sign
AUTHOR
Claudio Meller, Aug 26 2009
STATUS
approved