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

10, 50, 33, 25, 20, 16, 14, 12, 11, 10, 90, 83, 76, 71, 66, 62, 58, 55, 52, 50, 47, 45, 43, 41, 40, 38, 37, 35, 34, 33, 32, 31, 30, 29, 28, 27, 27, 26, 25, 25, 24, 23, 23, 22, 22, 21, 21, 20, 20, 20, 19, 19, 18, 18, 18, 17, 17, 17, 16, 16, 16, 16, 15, 15, 15, 15, 14, 14, 14

Offset: 1

Author

Henry Bottomley, May 11 2001

Keywords

• base
• nonn

Comments

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.

Examples

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

Crossrefs

Cf. A033420, A033421, A052038.

Programs

Mathematica

Table[FromDigits[RealDigits[1/n,10,2][[1]]],{n,70}] (* Harvey P. Dale, Jan 19 2018 *)

Formula

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