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 A098224 Number of primes <=10^n in which decimal digits are all distinct. 5
 4, 24, 121, 631, 3160, 13399, 47349, 137859, 283086, 283086, 283086, 283086, 283086, 283086, 283086, 283086, 283086, 283086, 283086, 283086, 283086, 283086, 283086, 283086, 283086, 283086, 283086, 283086, 283086, 283086, 283086, 283086, 283086 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Partial sums of A073532. - Lekraj Beedassy, Aug 02 2008 No number with more than 10 digits can have all of its decimal digits distinct, and no number that uses all ten distinct decimal digits can be prime (because the sum of all ten decimal digits is 45 so any such number is divisible by 3).  Therefore, every term in the sequence from and after a(9) is the same, i.e., 283086. - Harvey P. Dale, Dec 12 2010 LINKS FORMULA a(n) = 283086 for n >= 10. MATHEMATICA okQ[n_]:=Max[DigitCount[n]]==1 Table[Length[Select[Prime[Range[PrimePi[10^i]]], okQ]], {i, 9}] (* Harvey P. Dale, Dec 12 2010 *) CROSSREFS Cf. A006880, A006879, A073532, A098226-A098227. Sequence in context: A273444 A049315 A295506 * A024049 A103455 A289715 Adjacent sequences:  A098221 A098222 A098223 * A098225 A098226 A098227 KEYWORD base,nonn AUTHOR Labos Elemer, Oct 26 2004 STATUS approved

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Last modified September 20 13:45 EDT 2020. Contains 337264 sequences. (Running on oeis4.)