A173182 a(n) = name of smallest positive number in Spanish which has the letter E in the n-th position starting from the end, or -1 if no such number exists.

7, 3, 6, 40, 20, 60, 16, 17, 23, 25, 24, 34, 64, 117, 125, 124, 135, 134, 144, 154, 254, 335, 334, 344, 354, 654, 3154, 3235, 3234, 3244, 3254, 3354, 3444, 3454, 6454, 16254, 16354, 16444, 16454, 17454, 23454, 24444, 24454, 34454, 64454, 117454, 124444, 124454, 134444, 134454

Offset

1,1

Comments

a(1) is sietE because the first letter from the end in an E, a(2) is trEs because the second letter from the end in an E, a(3) is sEis because the third letter from the end is an E, a(4) is cuarEnta because the fourth letter from the end in an E, a(5) is vEinte because the fifth letter from the end in an E

References

Bulletin Los Acertijeros 77, June 1996, problem 608 by Rodolfo Kurchan

Links

Álvar Ibeas, Table of n, a(n) for n = 1..100

Crossrefs

Sequence in context: A344916 A023643 A050009 * A253891 A309612 A021856

Adjacent sequences: A173179 A173180 A173181 * A173183 A173184 A173185

Keyword

nonn,word

Author

Rodolfo Kurchan, Feb 11 2010

Extensions

More terms from Álvar Ibeas, Sep 20 2020

Status

approved