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Decimal expansion of Sum_{p prime, k>=1} 1 / 2^(p^k).
1

%I #17 Mar 10 2020 17:51:34

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

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

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

%N Decimal expansion of Sum_{p prime, k>=1} 1 / 2^(p^k).

%C Prime power constant: binary expansion is the characteristic function of prime powers (A069513).

%e 0.48305718112590956493... = (0.0111101110...)_2.

%e |||| |||

%e 2345 789

%Y Cf. A051006, A069513, A246655, A333182.

%K nonn,cons

%O 0,1

%A _Ilya Gutkovskiy_, Mar 10 2020