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A091644 Number of primes less than 10^n which have at least one digit 0. 9
0, 0, 15, 219, 2470, 26185, 266713, 2658107, 26198216, 256516296, 2501246232, 24320647270, 236032108530, 2287868820615 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

3 additional terms, generated using a sieve program. - Ryan Propper, Aug 20 2005

LINKS

Table of n, a(n) for n=1..14.

FORMULA

a(n) = A006880(n) - A091634(n).

EXAMPLE

a(3) = 15 because of the 168 primes less than 10^3, 15 have at least one 0 digit.

MATHEMATICA

NextPrim[n_] := Block[{k = n + 1}, While[ ! PrimeQ[k], k++ ]; k]; c = 0; p = 1; Do[ While[ p = NextPrim[p]; p < 10^n, If[ Position[ IntegerDigits[p], 0] != {}, c++ ]]; Print[c]; p--, {n, 1, 8}] (* Robert G. Wilson v, Feb 02 2004 *)

CROSSREFS

Cf. A091645, A091646, A091647, A091705, A091706, A091707, A091708, A091709, A091710.

Sequence in context: A081196 A020287 A152272 * A238538 A289160 A027843

Adjacent sequences:  A091641 A091642 A091643 * A091645 A091646 A091647

KEYWORD

nonn,base

AUTHOR

Enoch Haga, Jan 30 2004

EXTENSIONS

Edited and extended by Robert G. Wilson v, Feb 02 2004

More terms from Ryan Propper, Aug 20 2005

a(13) from Robert Price, Nov 11 2013

a(14) from Giovanni Resta, Jul 21 2015

STATUS

approved

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Last modified November 14 07:33 EST 2019. Contains 329111 sequences. (Running on oeis4.)