OFFSET
1,1
LINKS
Seiichi Manyama, Table of n, a(n) for n = 1..68
Wikipedia, Parasitic number.
FORMULA
a(4*k - 3) = 6*(10^(58*k) - 1)/59.
a(4*k - 2) = 7*(10^(58*k) - 1)/59.
a(4*k - 1) = 8*(10^(58*k) - 1)/59.
a(4*k) = 9*(10^(58*k) - 1)/59.
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
Seiichi Manyama, Aug 23 2017
STATUS
approved