This site is supported by donations to The OEIS Foundation.

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A098458 Periods of the Farey Bisection Expansions (FBE) of Sqrt[n], for n=1,2,3,... 1
 1, 4, 3, 1, 8, 6, 7, 5, 1, 12, 9, 8, 20, 10, 7, 1, 16, 12, 17, 10, 14, 18, 13, 9, 1, 20, 15, 18, 32, 12, 25, 13, 14, 16, 11, 1, 24, 18, 16, 15, 32, 14, 29, 20, 20, 34, 19, 13, 1, 28 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS See A098457 for the definition of the Farey Bisection Expansion. LINKS N. J. A. Sloane, Stern-Brocot or Farey Tree EXAMPLE The FBE of Sqrt[7] is {1,1,0,1,0,1,1,1,1,0,1,0,1,1,1,1,0,1,0,1,1,.. with period 7. Thus a(7)=7. CROSSREFS Cf. A010121, A097853, A098457. Sequence in context: A038763 A200384 A128007 * A165914 A139621 A196841 Adjacent sequences:  A098455 A098456 A098457 * A098459 A098460 A098461 KEYWORD nonn AUTHOR John W. Layman, Sep 08 2004 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .