
COMMENTS

Conjectures. 1) For every n, a(n)>0; 2) for n>=3, a(n)==0 (mod 10).
If 1) is true, then A215113 is unbounded.
The corresponding positions m=m(n) such that A214723(m)=a(n) are 1,3,12,132,2074,18625,2138668. m(8) exists and the calculations show that it is >= 24866450, although up to now the exact its value is unknown.
