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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A060417 Number of different decimal digits in n-th prime. 0
1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 2, 3, 2, 3, 3, 3, 2, 3, 3, 3, 3, 3, 2, 2, 3, 3, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 2, 3, 3, 3, 3, 2, 2, 3, 2, 2, 3, 3, 2, 3, 3, 2, 3, 2, 3, 3, 3, 3, 3, 3, 3, 2, 3, 2, 2, 3, 3, 3, 3, 3, 3, 3, 2, 3, 3, 3, 3, 3, 3, 2, 3, 3, 3 (list; graph; refs; listen; history; internal format)
OFFSET

1,6

FORMULA

Table[Length[Union[IntegerDigits[Prime[w]]]], {w, 1, 1000}]

EXAMPLE

The maximum is 10. Thus 1234567891 is a prime with 9 and 123456789011 with 10 different decimal digits.

CROSSREFS

A055642.

Sequence in context: A069926 A077429 A204553 * A097944 A037203 A032556

Adjacent sequences:  A060414 A060415 A060416 * A060418 A060419 A060420

KEYWORD

base,easy,nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Apr 05 2001

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 16 10:53 EST 2012. Contains 205904 sequences.