cp's OEIS Frontend

A117383 Positive numbers whose Spanish names do not include repeated letters.

%I A117383 #8 Jun 08 2022 23:17:45
%S A117383 1,2,3,4,10,11,12,15,80,100,1000,1001,1002,1003,1004,1011,1012,1080,
%T A117383 2000,3000,3001,4000,11000,12000,80000
%N A117383 Positive numbers whose Spanish names do not include repeated letters.
%o A117383 (Python)
%o A117383 from num2words import num2words as n2w
%o A117383 def letters(n):
%o A117383     return "".join(c for c in n2w(n, lang='es') if c.isalpha())
%o A117383 def ok(n):
%o A117383     w = letters(n)
%o A117383     return len(w) == len(set(w))
%o A117383 print([k for k in range(1, 100000) if ok(k)]) # _Michael S. Branicky_, Jun 08 2022
%Y A117383 Cf. A059916, A354681.
%K A117383 fini,full,nonn,word
%O A117383 1,2
%A A117383 _Rodolfo Kurchan_, Apr 24 2006