A268716 a(n) = 2*A006068(n); main diagonal of A268714.

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

Author

Antti Karttunen, Feb 12 2016

Keywords

• nonn

Links

• Antti Karttunen, Table of n, a(n) for n = 0..8191

Crossrefs

Cf. A001969, A006068.

Main diagonal of array A268714.

Row 3 and column 3 of array A268724.

Programs

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

Scheme

(define (A268716 n) (* 2 (A006068 n)))

Formula

a(n) = 2*A006068(n).

a(n) = A006068(A001969(n+1)).

a(n) = A268714(n,n).