This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A060417 Number of different decimal digits in n-th prime. 2
 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; text; internal format)
 OFFSET 1,6 LINKS Reinhard Zumkeller, Table of n, a(n) for n = 1..10000 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. PROG (Haskell) import Data.List (nub, sort) a060417 = length . nub . show . a000040 -- Reinhard Zumkeller, Apr 08 2012 CROSSREFS Cf. A055642, A097944. Sequence in context: A077429 A204553 A214455 * A097944 A037203 A032556 Adjacent sequences:  A060414 A060415 A060416 * A060418 A060419 A060420 KEYWORD base,easy,nonn AUTHOR Labos Elemer, Apr 05 2001 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.

Last modified October 19 11:09 EDT 2019. Contains 328216 sequences. (Running on oeis4.)