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!)
A073224 Partial sum of Pi(k) from 1 to 10^n. 5
27, 1465, 92041, 6554833, 504813055, 40947676475, 3442465670223, 296935715374179, 26108021958592999, 2329702677873323273, 210338403560373373799, 19172323465486902000641, 1761408925012566646647345, 162904914369466264400189781 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Hiroaki Yamanouchi, Table of n, a(n) for n = 1..20
FORMULA
a(n) = (10^n + 1) * A006880(n) - A046731(n). - Hiroaki Yamanouchi, Jul 06 2014
MATHEMATICA
s = 0; k = 1; Do[ While <= 10^n, s = s + PrimePi[k]; k++ ]; Print[s], {n, 1, 8}]
CROSSREFS
Cf. A000720.
Sequence in context: A017103 A042407 A042404 * A294964 A184689 A364993
KEYWORD
nonn
AUTHOR
Robert G. Wilson v, Jul 20 2002
EXTENSIONS
a(9)-a(10) from Donovan Johnson, Dec 15 2009
a(11)-a(12) from Donovan Johnson, Mar 19 2011
a(13)-a(14) from Hiroaki Yamanouchi, Jul 06 2014
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 March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)