OFFSET
0,1
COMMENTS
Subsequence of A023108.
EXAMPLE
The trajectory of 7239 reaches 16566 in one step and 16566 is a term in the trajectory of 7059, so 7239 belongs to the present sequence. The corresponding term in A063059, giving the number of steps, accordingly is 1.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Klaus Brockhaus, Jul 07 2001
STATUS
approved