login
This site is supported by donations to The OEIS Foundation.

 

Logo

Many excellent designs for a new banner were submitted. We will use the best of them in rotation.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A084298 Integer quotients Pi[m.p[m]]/m;. 2
1, 2, 26, 48, 108, 292, 6471, 8147 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..8.

FORMULA

a(n)=A000720[A084295(n).A084297(n)]/A084295(n)

MATHEMATICA

Do[s=PrimePi[n*Prime[n]]/n; If[IntegerQ[s], Print[s]], {n, 1, 100000}]

CROSSREFS

Cf. A000040, A000720, A084295, A084297.

Sequence in context: A072663 A050905 A067571 * A001772 A199206 A132861

Adjacent sequences:  A084295 A084296 A084297 * A084299 A084300 A084301

KEYWORD

nonn

AUTHOR

Labos Elemer, May 27 2003

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 .

Last modified April 23 13:43 EDT 2014. Contains 240929 sequences.