OFFSET
1,1
COMMENTS
V. S. Guba (2015) proved that such an infinite sequence exists. Numerical evidence suggests that it may also be unique (cf. A259934).
If there are infinitely many n with a(n) = a(n+1), then A175304 is infinite (see comment in A259934). - Vladimir Shevelev, Jul 21 2015
LINKS
N. J. A. Sloane, Table of n, a(n) for n = 1..64800 (Based on Robert Israel's b-file for A259934.)
V. S. Guba et al., Sequence and divisors, 2015. (in Russian)
FORMULA
CROSSREFS
KEYWORD
nonn,nice
AUTHOR
Max Alekseyev, Jul 09 2015
STATUS
approved