A119299 Total number of 8's digits in the first 10^n primes.

0, 8, 195, 3763, 47174, 558842, 6541723, 79273100, 882188472, 9770202402, 106927984586, 1198303968170

Offset

1,2

Links

Table of n, a(n) for n=1..12.

Example

At a(2)=8 there are 8 8's digits in the first 10^2 primes.

Maple

A119299 := proc(n) option remember: local k, s, lim: if(n=0)then return 0:fi: lim:=10^n: s:=procname(n-1): for k from 10^(n-1)+1 to lim do s:=s+nops([SearchAll("8", convert(ithprime(k), string))]): od: return s: end: seq(A119299(n), n=1..4); # Nathaniel Johnston, May 09 2011

Mathematica

Table[Total[DigitCount[#, 10, 8]&/@Prime[Range[10^n]]], {n, 7}]  (* Harvey P. Dale, Apr 05 2011 *)

Crossrefs

Cf. A119290, A119291, A119292, A119293, A119294, A119295, A119296, A119297, A119298, A119300.

Sequence in context: A103500 A232911 A338806 * A363986 A024287 A208703

Adjacent sequences: A119296 A119297 A119298 * A119300 A119301 A119302

Keyword

more,nonn,base

Author

Enoch Haga, May 13 2006

Extensions

Offset changed from 0 to 1 by Nathaniel Johnston, May 09 2011

a(8)-a(11) from Robert Price, Nov 05 2013

a(12) from Marek Hubal, Mar 04 2019

Status

approved