A048733 a(n) = A048730(n)/4.

0, 0, 0, 3, 0, 2, 6, 7, 0, 0, 4, 7, 12, 14, 14, 15, 0, 0, 0, 3, 8, 10, 14, 15, 24, 24, 28, 31, 28, 30, 30, 31, 0, 0, 0, 3, 0, 2, 6, 7, 16, 16, 20, 23, 28, 30, 30, 31, 48, 48, 48, 51, 56, 58, 62, 63, 56, 56, 60, 63, 60, 62, 62, 63, 0, 0, 0, 3, 0, 2, 6, 7, 0, 0, 4, 7, 12, 14, 14, 15, 32, 32

Offset

0,4

Comments

A048715 gives all n for which a(n) = 0, A048717 gives all n for which a(n) = n.

Links

Table of n, a(n) for n=0..81.

Formula

a(n) = ((n*7)-Xmult(n, 7))/4.

Prog

(PARI) a(n)=(7*n - bitxor(n, bitxor(2*n, 4*n)))/4 \\ Charles R Greathouse IV, Oct 03 2016

Crossrefs

Sequence in context: A285723 A072328 A135040 * A309973 A298058 A298707

Adjacent sequences: A048730 A048731 A048732 * A048734 A048735 A048736

Keyword

nonn,easy

Author

Antti Karttunen

Status

approved