A119299 - OEIS

%I #27 Mar 04 2019 10:38:52

%S 0,8,195,3763,47174,558842,6541723,79273100,882188472,9770202402,

%T 106927984586,1198303968170

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

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

%p 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

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

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

%K more,nonn,base

%O 1,2

%A _Enoch Haga_, May 13 2006

%E Offset changed from 0 to 1 by _Nathaniel Johnston_, May 09 2011

%E a(8)-a(11) from _Robert Price_, Nov 05 2013

%E a(12) from _Marek Hubal_, Mar 04 2019