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 A228415 Count of the first 10^n primes which do not contain the digit 3. 0
 1, 7, 54, 534, 4909, 45405, 385008, 3539880, 32260781, 294001190, 2564080248, 23271246324 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS FORMULA a(n) <= 9^n. - Charles R Greathouse IV, May 21 2014 EXAMPLE a(1) = 7 since there are 7 primes in the first 10 (through 29) that do not contain a 3.  Namely: 2, 5, 7, 11, 17, 19, 29. MATHEMATICA Table[Length[Select[Range[10^n], DigitCount[Prime[#], 10, 3] == 0 &]], {n, 0, 5}] (* Robert Price, Mar 23 2020 *) CROSSREFS Cf. A231412, A228413-A228421, A097952, A091634-A091643. Sequence in context: A093742 A291703 A014509 * A084065 A200140 A298104 Adjacent sequences:  A228412 A228413 A228414 * A228416 A228417 A228418 KEYWORD more,nonn,base AUTHOR Robert Price, Nov 09 2013 STATUS approved

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Last modified April 23 10:28 EDT 2021. Contains 343204 sequences. (Running on oeis4.)