

A228413


Count of the first 10^n primes which do not contain the digit 1.


20



1, 6, 54, 532, 4675, 34425, 262549, 2051466, 16831152, 155616459, 1529462564, 14830618421
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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) = 54 since there are 54 primes less than 541 (the 100th prime) that do not contain a 1. Namely: 2, 3, 5, 7, 23, 29, ..., 523.


MATHEMATICA

Table[Length[Select[Range[10^n], DigitCount[Prime[#], 10, 1] == 0 &]], {n, 0, 5}] (* Robert Price, Mar 23 2020 *)


CROSSREFS

Cf. A231412, A228413A228421, A097952, A091634A091643.
Sequence in context: A177484 A092810 A092472 * A098658 A109576 A241843
Adjacent sequences: A228410 A228411 A228412 * A228414 A228415 A228416


KEYWORD

nonn,base,more,changed


AUTHOR

Robert Price, Nov 09 2013


STATUS

approved



