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!)
A097428 Integer part of the diameters of circles with prime circumferences. 0
0, 0, 1, 2, 3, 4, 5, 6, 7, 9, 9, 11, 13, 13, 14, 16, 18, 19, 21, 22, 23, 25, 26, 28, 30, 32, 32, 34, 34, 35, 40, 41, 43, 44, 47, 48, 49, 51, 53, 55, 56, 57, 60, 61, 62, 63, 67, 70, 72, 72, 74, 76, 76, 79, 81, 83, 85, 86, 88, 89, 90, 93, 97, 98, 99, 100, 105, 107, 110, 111, 112 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,4

LINKS

Table of n, a(n) for n=2..72.

FORMULA

Diameter = Circumference/Pi.

EXAMPLE

If C = 5. floor(3/Pi) = 1, the third entry.

MATHEMATICA

Floor[#/Pi]&/@Prime[Range[80]] (* Harvey P. Dale, Dec 28 2012 *)

PROG

(PARI) f(n) = forprime(x=1, n, print1(floor(x/Pi)", "))

CROSSREFS

Sequence in context: A179464 A071191 A300903 * A126072 A265570 A265554

Adjacent sequences:  A097425 A097426 A097427 * A097429 A097430 A097431

KEYWORD

nonn

AUTHOR

Cino Hilliard, Aug 22 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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 10 00:32 EDT 2022. Contains 356026 sequences. (Running on oeis4.)