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A231412 Count of the first 10^n primes which do not contain the digit 0. 20
1, 10, 91, 819, 7122, 61702, 557224, 5062320, 45002763, 395879190, 3579400605, 32487367715 (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(2) = 91 = 100-9 since only 9 primes less than 541 (the 100th prime) contain a zero.  Namely: 101, 103, 107, 109, 307, 401, 409, 503, 509.

MATHEMATICA

Table[Length[Select[Range[10^n], DigitCount[Prime[#], 10, 0] == 0 &]], {n, 0, 5}] (* Robert Price, Mar 23 2020 *)

CROSSREFS

Cf. A231412, A228413-A228421, A097952, A091634-A091643.

Sequence in context: A244203 A002739 A079928 * A002452 A096261 A015455

Adjacent sequences:  A231409 A231410 A231411 * A231413 A231414 A231415

KEYWORD

nonn,base,more

AUTHOR

Robert Price, Nov 08 2013

STATUS

approved

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Last modified December 4 23:44 EST 2020. Contains 338943 sequences. (Running on oeis4.)