login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A118086 Number of ways 3/2 is a product of n superparticular ratios, without regard to order. A superparticular ratio is a ratio of the form m/(m-1). 1
1, 2, 14, 229, 9393, 1474291 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

The computations were made using Maple and a program of David Canright. The sequence relates to music theory, as 3/2 is the interval of a fifth in music and the sequence enumerates various ways of subdividing a fifth using superparticular intervals.

LINKS

Table of n, a(n) for n=1..6.

CROSSREFS

Cf. A085098, A118087.

Sequence in context: A251692 A338187 A323693 * A048163 A093548 A052215

Adjacent sequences:  A118083 A118084 A118085 * A118087 A118088 A118089

KEYWORD

hard,more,nonn

AUTHOR

Gene Ward Smith, Apr 14 2006

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 26 16:44 EDT 2021. Contains 346294 sequences. (Running on oeis4.)