A099338 - OEIS

%I #6 Sep 20 2023 05:43:18

%S 1,3,64,636,6291,62649,625491,6253329,62501692,625011152,6250052283,

%T 62500007205

%N Frequency of the hexadecimal 5 in the first 10^n hexadecimal digits of Pi.

%H Kanada Laboratory, <a href="https://web.archive.org/web/20120324194210/http://pi2.cc.u-tokyo.ac.jp/pi-hexa_current.html">Statistical Distribution Information</a>.

%t $MaxPrecision = 1100000; ph = Drop[ RealDigits[Pi, 16, 5*10^5] [[1]], 1]; Table[ Count[ Take[ph, 10^n], 5], {n, 5}]

%Y Cf. A000796, A062964, A099333, A099334, A099335, A099336, A099337, A099339, A099340, A099341, A099342, A099343, A099344, A099345, A099346, A099347, A099348.

%K base,nonn,more

%O 1,2

%A _Robert G. Wilson v_, Oct 12 2004