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

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A097715 Decimal expansion of 7*sqrt(3)/2. 0

%I #7 Mar 31 2012 10:26:03

%S 6,0,6,2,1,7,7,8,2,6,4,9,1,0,7,0,5,2,7,3,4,6,0,6,2,1,9,5,2,7,0,5,5,3,

%T 2,8,4,2,9,9,8,1,8,3,8,8,3,3,6,3,3,2,1,9,8,1,9,5,3,2,4,4,2,8,0,8,1,7,

%U 6,5,5,5,9,1,8,0,8,0,0,1,2,9,7,8,4,0,1,1,6,5,3,6,5,0,3,7,0,0,1,4,8,6,4,6,9

%N Decimal expansion of 7*sqrt(3)/2.

%C Corresponds to the minimal height-to-diameter ratio of a cylinder such that seven of them may be placed in mutual contact.

%D M. Gardner, The Scientific American book of Mathematical Puzzles & Diversions, pp. 115 Simon & Shuster NY 1959 (or Hexaflexagons And Other Mathematical Diversions, The Univ. of Chicago Press Chicago IL 1988).

%e 7*sqrt(3)/2=6.0621778264910705273460621952705532842998183883363...

%t RealDigits[7Sqrt[3]/2, 10, 105][[1]]

%K nonn,cons

%O 1,1

%A _Lekraj Beedassy_, Sep 21 2004

%E Corrected and extended by _Rick L. Shepherd_ and _Ray Chandler_, Sep 21 2004

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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)