OFFSET
0,2
COMMENTS
See Section 9 in the linked paper.
LINKS
Max A. Alekseyev and N. J. A. Sloane, On Kaprekar's Junction Numbers, arXiv:2112.14365, 2021; Journal of Combinatorics and Number Theory 12:3 (2022), 115-155.
FORMULA
a(n) = A006064(n) mod 9.
CROSSREFS
KEYWORD
nonn
AUTHOR
Max Alekseyev and N. J. A. Sloane, Apr 05 2014
STATUS
approved