OFFSET
1,1
COMMENTS
It seems that for all n >= 0, Sum_{k=1 .. 2^n} a(k) = 2^(n+3).
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..16384
PROG
(Haskell)
a256489 n = a256489_list !! (n-1)
a256489_list = zipWith (-) (tail a257509_list) a257509_list
-- Reinhard Zumkeller, May 06 2015
CROSSREFS
KEYWORD
nonn,hear
AUTHOR
Antti Karttunen, May 03 2015
STATUS
approved