A129343 a(2n) = a(n), a(2n+1) = 4n+1.

0, 1, 1, 5, 1, 9, 5, 13, 1, 17, 9, 21, 5, 25, 13, 29, 1, 33, 17, 37, 9, 41, 21, 45, 5, 49, 25, 53, 13, 57, 29, 61, 1, 65, 33, 69, 17, 73, 37, 77, 9, 81, 41, 85, 21, 89, 45, 93, 5, 97, 49, 101, 25, 105, 53, 109, 13, 113, 57, 117, 29, 121, 61, 125, 1, 129, 65, 133, 33, 137

Offset

0,4

Links

Table of n, a(n) for n=0..69.

Formula

a(n) = 2n/2^A007814(n) - 1.

Crossrefs

Equals 2*A000265(n) - 1.

Sequence in context: A199736 A207873 A198671 * A342634 A010482 A135856

Adjacent sequences: A129340 A129341 A129342 * A129344 A129345 A129346

Keyword

nonn,easy

Author

Ralf Stephan, May 28 2007

Status

approved