COMMENTS

a(n) = A153466(n) mod 9. - Paul Curtz, Dec 27 2008 Continued fraction expansion of A176439. - Bruno Berselli, Mar 15 2011 Final digit of 16^(2^n) + 1. That is, the last digit of every Fermat number F(n) is 7, where n >= 2. - Arkadiusz Wesolowski, Jul 28 2011 Decimal expansion of 7/9. - Arkadiusz Wesolowski, Sep 12 2011