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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A046719 Total number of digits in all primes with n digits. 1
4, 42, 429, 4244, 41815, 413436, 4102567, 40775008, 405774711, 4042049770, 40293025322, 401878286460, 4009949122673, 40024266995482, 399594430078005, 3990300329780096, 39853419882545236, 398095148341559286, 3977036546783471193 (list; graph; refs; listen; history; internal format)
OFFSET

4,1

EXAMPLE

There are 21 2-digit primes, so a(2)=2*21=42.

CROSSREFS

a(n)=n*b(n) where b(n) is A006879.

Sequence in context: A118447 A037296 A085954 * A092800 A156440 A151453

Adjacent sequences:  A046716 A046717 A046718 * A046720 A046721 A046722

KEYWORD

easy,nonn,base

AUTHOR

Enoch Haga (Enokh(AT)comcast.net)

EXTENSIONS

Corrected by Jud McCranie (JudMcCranie(AT)ugaalum.uga.edu) and N. J. A. Sloane (njas(AT)research.att.com).

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 15 21:56 EST 2012. Contains 205860 sequences.