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

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A098227 Number of primes with exactly n decimal digits which have repeated digits. 5
0, 1, 46, 551, 5834, 58667, 552131, 5006366, 44940852, 404204977, 3663002302, 33489857205, 308457624821, 2858876213963, 26639628671867, 249393770611256, 2344318816620308, 22116397130086627, 209317712988603747 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Above n=9 a[n]=A006879[n] because above 10 repetition must occur. At n=10 the sum of digits 0+1+2+3+4+5+6+7+8+9=45 is divisible by 3, so no primes with 10 distinct decimal digits exists, all primes must have repeated digits.

LINKS

Table of n, a(n) for n=1..19.

EXAMPLE

Above n=9 a[n]=A006879[n] because above 10 there must be a repetition. At n=10 the sum of digits 0+1+2+3+4+5+6+7+8+9=45 is divisible by 3, so no primes with 10 distinct decimal digits exist.

CROSSREFS

Cf. A006880, A006879, A098224-A098226.

Sequence in context: A223914 A224186 A027940 * A077732 A200898 A160151

Adjacent sequences:  A098224 A098225 A098226 * A098228 A098229 A098230

KEYWORD

base,nonn

AUTHOR

Labos Elemer, Oct 25 2004

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 December 21 12:18 EST 2014. Contains 252320 sequences.