OFFSET
1,1
EXAMPLE
6666^4 = 7197(4518637029)136.
PROG
(Python)
def haspan(s): return any(len(set(s[i:i+10]))==10 for i in range(len(s)-9))
print([m for m in range(20000) if haspan(str(m**4))]) # Michael S. Branicky, Feb 28 2021
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Giovanni Resta, Feb 06 2006
STATUS
approved