OFFSET
1,2
PROG
(Python)
from num2words import num2words as n2w
def letters(n):
return "".join(c for c in n2w(n, lang='es') if c.isalpha())
def ok(n):
w = letters(n)
return len(w) == len(set(w))
print([k for k in range(1, 100000) if ok(k)]) # Michael S. Branicky, Jun 08 2022
CROSSREFS
KEYWORD
fini,full,nonn,word
AUTHOR
Rodolfo Kurchan, Apr 24 2006
STATUS
approved