We tabulate the outcome for $n\ge 10$; in particular, the column headed $R$ lists $R(n)$ truncated to three decimal places.
The smallest (most delicate) values are tabulated below.
Go to the list of words starting with: a
b
c
d
e
f
g
h
i
j
k
l
m
n
o
p
q
r
s
t
u
v
w
y
z