A347423 - OEIS

%I #13 Sep 01 2021 05:13:15

%S 2,3,5,4,8,2,0,0,4,5,0,3,0,9,4,9,3,8,2,0,2,3,1,3,8,6,5,2,9,1,9,3,9,9,

%T 2,7,5,4,9,4,7,7,1,3,7,8,7,7,1,6,4,1,0,7,7,0,4,5,0,5,1,5,1,3,0,0,0,0,

%U 5,3,1,7,7,0,9,3,9,6,9,8,5,3,6,1,6,8,3,6

%N Decimal expansion of 2*sqrt(2 log 2).

%C Full width at half maximum of the normal distribution.

%H <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>

%e 2.35482004503094938202313865291939927549477137877164107704505151300005317709....

%t RealDigits[2*Sqrt[2*Log[2]], 10, 100][[1]] (* _Amiram Eldar_, Sep 01 2021 *)

%o (PARI) log(256)^.5

%Y Cf. A257872 (squared), A010466*A346713.

%K nonn,cons

%O 1,1

%A _Charles R Greathouse IV_, Aug 31 2021