[seqfan] a(n) is the digitsum of a(a(n))

[Eric Angelini]

Hello SeqFans,

Seq starts:
1,2,3,4,5,6,7,8,9,11,29,13,49,15,69,17,89,19,199,21,399,23,599,25,799,27,999,30,2999,3999,32,5999,34,...
How many 9's in the 999th term?
;-)
(always take the smallest a(n) not yet present and not leading to a contradiction)

Best,
E.