A280508 - OEIS

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A280508

a(n) = n XOR A057889(n).

6

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 0, 6, 0, 0, 0, 0, 0, 10, 0, 0, 12, 10, 0, 10, 12, 0, 0, 10, 0, 0, 0, 0, 0, 18, 0, 12, 20, 30, 0, 12, 0, 30, 24, 0, 20, 18, 0, 18, 20, 0, 24, 30, 0, 12, 0, 30, 20, 12, 0, 18, 0, 0, 0, 0, 0, 34, 0, 20, 36, 54, 0, 0, 24, 34, 40, 20, 60, 54, 0, 20, 24, 54, 0, 0, 60, 34, 48, 20, 0, 54, 40, 0, 36, 34, 0, 34, 36, 0, 40, 54, 0, 20, 48

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OFFSET

0,12

LINKS

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

Index entries for sequences related to binary expansion of n

Index entries for sequences operating on polynomials in ring GF(2)[X]

FORMULA

a(n) = A003987(n,A057889(n)) = n XOR A057889(n).

Other identities. For all n >= 0:

a(A057889(n)) = a(n).

PROG

(Scheme) (define (A280508 n) (A003987bi n (A057889 n))) ;; Where A003987bi implements A003987 (bitwise-XOR).

CROSSREFS

Cf. A003987, A057889, A280505, A280506, A280507, A280509.

Cf. A057890 (positions of zeros).

Sequence in context: A198426 A335614 A019110 * A217221 A378011 A158090

Adjacent sequences: A280505 A280506 A280507 * A280509 A280510 A280511

KEYWORD

nonn,base

AUTHOR

Antti Karttunen, Jan 09 2017

STATUS

approved