The OEIS is supported by the many generous donors to the OEIS Foundation.

 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 Table of n, a(n) for n=1..50. 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 A305621 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 | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified September 12 20:35 EDT 2024. Contains 375854 sequences. (Running on oeis4.)