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A231411 Total number of zero digits in primes less than 10^n. 9
0, 0, 15, 232, 2725, 30350, 324133, 3386986, 34984325, 358604948, 3657365837, 37164550469, 376613845818, 3808514755978 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

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

EXAMPLE

a(3)=15, since there are 15 zeros in primes less than 1000.  Namely: 101, 103, 107, 109, 307, 401, 409, 503, 509, 601, 607, 701, 709, 809, 907.

MATHEMATICA

Table[Count[IntegerDigits[Prime[Range[PrimePi[10^n-1]]]], 0, 2], {n, 7}] (* Robert Price, Jun 16 2019 *)

CROSSREFS

Cf. A231590-A231598, A119290, A119291-A119300.

Cf. A033713.

Sequence in context: A075262 A286722 A250418 * A097185 A178299 A097582

Adjacent sequences:  A231408 A231409 A231410 * A231412 A231413 A231414

KEYWORD

nonn,base,more

AUTHOR

Robert Price, Nov 08 2013

EXTENSIONS

a(14) from Giovanni Resta, Jul 20 2015

STATUS

approved

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Last modified October 17 11:34 EDT 2021. Contains 348048 sequences. (Running on oeis4.)