OFFSET
1,1
COMMENTS
First six terms such that k_max = 9: 6945015541, 9010299827, 13680125387, 18434278453, 20011563589, 22661476973.
First case of k_max = 10: 47298912347.
Larger cases of k_max?
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, Jan 17 2019
STATUS
approved