OFFSET
1,2
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
PROG
(Haskell)
a261645 n = a261645_list !! (n-1)
a261645_list = zipWith (-) (tail a261644_list) a261644_list
CROSSREFS
KEYWORD
sign
AUTHOR
Reinhard Zumkeller, Aug 31 2015
STATUS
approved