OFFSET
0,2
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 0..1000
FORMULA
a(n) = A006921(2*n).
PROG
(Haskell)
a260022 = a006921 . (* 2) -- Reinhard Zumkeller, Jul 14 2015
(Python)
def A260022(n): return sum(int(not r & ~(2*n-r))*2**(n-r) for r in range(n+1)) # Chai Wah Wu, Jun 20 2022
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jul 14 2015
STATUS
approved