OFFSET
1,1
COMMENTS
a(n) = 0 iff n = 3, as a consequence of Catalan's conjecture or Mihăilescu's theorem. - Bernard Schott, Apr 22 2022
LINKS
Chai Wah Wu, Table of n, a(n) for n = 1..78
Wikipedia, Catalan's conjecture.
MATHEMATICA
Table[Max[Last[ContinuedFraction[Sqrt[1+2^u]]]], {u, 1, 32}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Nov 13 2002
EXTENSIONS
Definition clarified, a(3) corrected and a(33)-a(43) added by Chai Wah Wu, Apr 19 2022
STATUS
approved