A103585 Consider numbers k such that (A102370(k)-k)/2 = 1; read them mod 4 to get the sequence.

1, 3, 3, 1, 3, 3, 1, 3, 3, 1, 3, 1, 3, 3, 1, 3, 3, 1, 3, 3, 1, 3, 1, 3, 3, 1, 3, 3, 1, 3, 3, 1, 3, 1, 3, 3, 1, 3, 3, 1, 3, 3, 3, 1, 3, 3, 1, 3, 3, 1, 3, 3, 1, 3, 1, 3, 3, 1, 3, 3, 1, 3, 3, 1, 3, 1, 3, 3, 1, 3, 3, 1, 3, 3, 1, 3, 1, 3, 3, 1, 3, 3, 1, 3, 3, 3, 1, 3, 3, 1, 3, 3, 1, 3, 3, 1, 3, 1, 3

Offset: 1

Author

Benoit Cloitre and Philippe Deléham, Mar 24 2005

Keywords

• nonn
• base

Comments

Is there a self-contained construction of this two-valued sequence?

Sequence appears to have period 43. - Ralf Stephan, May 18 2007

Examples

			The numbers k are 1, 3, 7, 9, 11, 15, 17, 19, ...
		

Links

• David Applegate, Benoit Cloitre, Philippe Deléham and N. J. A. Sloane, Sloping binary numbers: a new sequence related to the binary numbers [pdf, ps], J. Integer Seq. 8 (2005), no. 3, Article 05.3.6, 15 pp.

Crossrefs

Cf. A102370, A103587.