A322721 - OEIS

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A322721

Number of times the digit 6 appears in the first 10^n decimal digits of Euler's number e = exp(1), counting starts after the decimal point.

0, 12, 99, 1079, 10183, 100479, 998869, 10000158, 99987241, 999931170

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OFFSET

1,2

COMMENTS

It is not known if e is normal, but the distribution of decimal digits found for the first 10^n digits of e shows no statistically significant departure from a uniform distribution.

LINKS

Table of n, a(n) for n=1..10.

Eric Weisstein's World of Mathematics, e Digits.

MAPLE

a:=proc(n)

local digits, EXP1, C, i;

digits:=10^n+100;

EXP1:=convert(frac(evalf[digits](exp(1))), string)[2..digits-99];

C:=0;

for i from 1 to length(EXP1) do

if EXP1[i]="6" then C:=C+1; fi;

od;