OFFSET
1,1
COMMENTS
The numbers in the sequence are conjectured to be restricted to 9,52, or 61. Note that 61-52 = 9, (52+2)/(61-52) = (52+2)/9 = 6, (61+2)/(61-52) = (61+2)/9 = 7 and we have lcm(9,52,61) =28548 = 13^4 - 13 and (52+2)/9 + (61+2)/9 = 6+7 = 13.
LINKS
CROSSREFS
KEYWORD
nonn
AUTHOR
Stephen Crowley, Feb 04 2010
STATUS
approved