login
A268716
a(n) = 2*A006068(n); main diagonal of A268714.
4
0, 2, 6, 4, 14, 12, 8, 10, 30, 28, 24, 26, 16, 18, 22, 20, 62, 60, 56, 58, 48, 50, 54, 52, 32, 34, 38, 36, 46, 44, 40, 42, 126, 124, 120, 122, 112, 114, 118, 116, 96, 98, 102, 100, 110, 108, 104, 106, 64, 66, 70, 68, 78, 76, 72, 74, 94, 92, 88, 90, 80, 82, 86, 84, 254, 252, 248, 250, 240, 242, 246, 244, 224, 226
OFFSET
0,2
LINKS
FORMULA
a(n) = 2*A006068(n).
a(n) = A006068(A001969(n+1)).
a(n) = A268714(n,n).
PROG
(Scheme) (define (A268716 n) (* 2 (A006068 n)))
(Python)
def A268716(n):
k, m = n, n>>1
while m > 0:
k ^= m
m >>= 1
return k<<1 # Chai Wah Wu, Jun 30 2022
CROSSREFS
Main diagonal of array A268714.
Row 3 and column 3 of array A268724.
Sequence in context: A365902 A303823 A286712 * A204985 A255066 A184364
KEYWORD
nonn
AUTHOR
Antti Karttunen, Feb 12 2016
STATUS
approved