

A228417


Count of the first 10^n primes which do not contain the digit 5.


0



1, 9, 85, 708, 6635, 60640, 535534, 4737129, 43297195, 392641522, 3536880527, 31067514571
(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) = 9 since there are 9 primes in the first 10 (through 29) that do not contain a 5. Namely: 2, 3, 7, 11, 13, 17, 19, 23, 29.


CROSSREFS

Cf. A231412, A228413A228421, A097952, A091634A091643.
Sequence in context: A196434 A197197 A295118 * A015580 A163308 A160112
Adjacent sequences: A228414 A228415 A228416 * A228418 A228419 A228420


KEYWORD

more,nonn,base


AUTHOR

Robert Price, Nov 09 2013


STATUS

approved



