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A061861 First two significant digits of 1/n written in decimal. 1

%I #7 Dec 07 2019 08:18:53

%S 10,50,33,25,20,16,14,12,11,10,90,83,76,71,66,62,58,55,52,50,47,45,43,

%T 41,40,38,37,35,34,33,32,31,30,29,28,27,27,26,25,25,24,23,23,22,22,21,

%U 21,20,20,20,19,19,18,18,18,17,17,17,16,16,16,16,15,15,15,15,14,14,14

%N First two significant digits of 1/n written in decimal.

%C After 10^k terms the number of times m will have appeared will be about 10^(k+2)/(9*m*(m+1)); e.g., 10 will appear just over 10.1% of the time.

%F a(n) = floor(10^floor(2+log_10(n-1))/n).

%e a(32)=31 since 1/32 = 0.0312500000...

%t Table[FromDigits[RealDigits[1/n,10,2][[1]]],{n,70}] (* _Harvey P. Dale_, Jan 19 2018 *)

%Y Cf. A033420, A033421, A052038.

%K base,nonn

%O 1,1

%A _Henry Bottomley_, May 11 2001

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Last modified March 29 11:45 EDT 2024. Contains 371278 sequences. (Running on oeis4.)