login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A231726 Count of the first 10^n primes containing at least one 0's digit. 10
0, 9, 181, 2878, 38298, 442776, 4937680, 54997237, 604120810, 6420599395, 67512632285 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..11.

FORMULA

a(n) ~ 10^n. - Charles R Greathouse IV, May 21 2014

EXAMPLE

a(2)=9 because there are 9 primes not greater than 547 (the 100th prime) that contain a zero digit.  Namely: 101, 103, 107, 109, 307, 401, 409, 503, 509.

MATHEMATICA

cnt = 0; Table[Do[p = Prime[k]; If[MemberQ[IntegerDigits[p], 0], cnt++], {k, 10^(n - 1) + 1, 10^n}]; cnt, {n, 5}] (* T. D. Noe, Nov 13 2013 *)

CROSSREFS

Cf. A231726-A231790, A231792-A231796, A091634-A091643, A231412, A228413-A228421.

Sequence in context: A034240 A163132 A212704 * A064332 A319798 A300598

Adjacent sequences:  A231723 A231724 A231725 * A231727 A231728 A231729

KEYWORD

more,nonn,base

AUTHOR

Robert Price, Nov 12 2013

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 3 04:21 EDT 2020. Contains 333195 sequences. (Running on oeis4.)