OFFSET
1,2
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
PROG
(Haskell)
a219609 n = a219609_list !! (n-1)
a219609_list = map (`div` 2) $ zipWith (-) (tail a219608_list) a219608_list
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Nov 26 2012
STATUS
approved