View Single Post
Old 2018-04-03, 00:12   #2
10metreh
 
10metreh's Avatar
 
Nov 2008

91216 Posts
Default

Quote:
Originally Posted by Dubslow View Post
Is there an OEIS entry for this sequence (starting with f(0)=3)?
Yes: oeis.org/A146556

Quote:
Or, as a corollary, the secondary sequence g(n) where g(n) is the first index of f(n) which is divisible by the nth Mersenne prime?

Such that we know at least the first 873 terms of f(n); meanwhile g(1) = 0, g(2) = 2, g(3) = 29, with g(5) unknown as evidenced by this thread?
Seems not - actually g(3) = 30, and g(4) = 492. The only OEIS match for these terms is oeis.org/A143414 which is clearly unrelated.

Last fiddled with by 10metreh on 2018-04-03 at 00:12
10metreh is offline   Reply With Quote