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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

Table of n, a(n) for n=0..11.

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.)