A225081 Gray code variant of A048896.

1, 2, 1, 2, 4, 2, 1, 2, 4, 8, 4, 2, 4, 2, 1, 2, 4, 8, 4, 8, 16, 8, 4, 2, 4, 8, 4, 2, 4, 2, 1, 2, 4, 8, 4, 8, 16, 8, 4, 8, 16, 32, 16, 8, 16, 8, 4, 2, 4, 8, 4, 8, 16, 8, 4, 2, 4, 8, 4, 2, 4, 2, 1, 2, 4, 8, 4, 8, 16, 8, 4, 8, 16, 32, 16, 8, 16, 8, 4, 8, 16, 32, 16, 32, 64, 32, 16, 8, 16, 32, 16, 8, 16, 8, 4

Offset

0,2

Comments

Has a different permutation of the same terms in A048896 through the 2^n-th term.

Uses the Gray code weight (gt) in A005811 instead of the binary weight (wt) in A000120.

Links

Table of n, a(n) for n=0..94.

Formula

2^(A005811(n+1)-1), n>=0.

Example

a(8) = 4 = 2^2 since A005811(9) = 3.

Crossrefs

Cf. A048896, A005811.

Sequence in context: A013943 A164281 A082693 * A307368 A097082 A281729

Adjacent sequences: A225078 A225079 A225080 * A225082 A225083 A225084

Keyword

nonn

Author

Gary W. Adamson, Apr 26 2013

Status

approved