OFFSET
0,1
COMMENTS
Subsequence of A023108.
EXAMPLE
The trajectory of 12097 reaches 91118 in one step and 91118 is a term in the trajectory of 10553, so 12097 belongs to the present sequence. The corresponding term in A063062, giving the number of steps, accordingly is 1.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Klaus Brockhaus, Jul 07 2001
STATUS
approved