OFFSET
1
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
Eric Weisstein, Harshad Numbers
Wikipedia, Harshad number
PROG
(Haskell)
a188641 = (1 -) . signum . a070635
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Reinhard Zumkeller, Apr 07 2011
STATUS
approved