OFFSET
1,1
COMMENTS
Subsequence of A023108.
EXAMPLE
The trajectory of 1497 reaches 9438 in one step and 9438 is a term in the trajectory of 879, so 1497 belongs to the present sequence. The corresponding term in A063053, giving the number of steps, accordingly is 1.
KEYWORD
base,nonn
AUTHOR
Klaus Brockhaus, Jul 07 2001
EXTENSIONS
Offset corrected by Sean A. Irvine, Apr 17 2023
STATUS
approved