OFFSET
1,1
COMMENTS
123456789059 is in the sequence because (1+2+3+4+5+6+7+8+9+0) = (5*9) = 45.
LINKS
Carole Dubois, Table of n, a(n) for n = 1..5000
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Eric Angelini and Carole Dubois, Oct 16 2020
STATUS
approved