OFFSET
1,1
FORMULA
a(n) = n*A112905(n).
EXAMPLE
a(4) = 77772 because 77772 contains 4 sevens and is divisible by 4.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Ray G. Opao, Oct 05 2005
EXTENSIONS
Extended by Ray Chandler, Oct 09 2005
STATUS
approved