OFFSET
1,2
COMMENTS
This sequence is infinite; in particular, 2^(2^n) - 1 is in this sequence for each n > 2.
Not every member of this sequence greater than 7 is divisible by 255, see A268694.
LINKS
Kevin P. Thompson, Table of n, a(n) for n = 1..392
CROSSREFS
KEYWORD
nonn
AUTHOR
Arkadiusz Wesolowski, Feb 11 2016
STATUS
approved