[seqfan] Brute force density: triples and cubes

[Eric Angelini]

Hello SeqFans,
is T containing 10% of 0s, 10% of 1s, 10% of 2s,... 10% of 9s?

T starts with 50 and is always extended with the triple of the 
leftmost digit not yet tripled in T.

T = 50,15,0,3,15,0,9,3,15,0,27,9,3,15,0,6,21,27,9,3,15,0,18,6,3,6,21,27,9,3,15,0,3,24,...
(if T enters into a loop, the question is closed -- but I can't
find one).

I would have the same question with Q: Q starts with 90 and is
always extended with the cube of the leftmost digit not yet cubed
in Q.

Q = 90,729,0,343,8,729,0,27,64,27,512,343,8,729,0,8,343,216,64,8,343,125,1,8,27,64,27,...

Best,
É.