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A061861 First two significant digits of 1/n written in decimal. 1
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

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.

LINKS

Table of n, a(n) for n=1..69.

FORMULA

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

EXAMPLE

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

MATHEMATICA

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

CROSSREFS

Cf. A033420, A033421, A052038.

Sequence in context: A274561 A253221 A222633 * A243226 A283237 A036786

Adjacent sequences:  A061858 A061859 A061860 * A061862 A061863 A061864

KEYWORD

base,nonn

AUTHOR

Henry Bottomley, May 11 2001

STATUS

approved

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Last modified November 29 21:32 EST 2021. Contains 349416 sequences. (Running on oeis4.)