OFFSET
0,2
COMMENTS
Luhn mod 10 check digits of terms in A093018.
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 0..10000
John Kilgo, Using the Luhn Algorithm, DotNetJohn.com.
Webopedia, Luhn formula
Wikipedia, Luhn algorithm
FORMULA
a(n) = A093018(n) - 10*n. - Reinhard Zumkeller, Nov 08 2014
EXAMPLE
PROG
(Haskell)
a093019 = flip mod 10 . a093018 -- Reinhard Zumkeller, Nov 08 2014
CROSSREFS
KEYWORD
easy,nonn,base
AUTHOR
Ray Chandler, Apr 03 2004
STATUS
approved