
COMMENTS

Can it be shown that this is always an increasing sequence?
a(n) is an increasing sequence because a(n) is a subset of the integer sequence b(n) = (fractional part of (3/2)^n without the decimal point)/5^n = A204544(n) / 5^n = prime numbers of A002380.  Michel Lagneau, Jan 25 2012
Corresponding n: 3, 5, 7, 9, 11, 20, 28, 62, 161, 204, 471, 505, 881, 1810, 1812, 2506, 3321, ...  Eric Chen, Jun 13 2018
