%I #24 Feb 03 2025 23:02:50

%S 4,7,7,9,9,9,3

%N Decimal expansion of infinite sum of reciprocals Sum_{n>=1} 1/A357934(n).

%C Sum of reciprocals of product of two distinct lesser twin primes.

%F Equals (A342714^2-A356793)/2.

%F Equals Sum_{m<n and n>=2} 1/(A001359(m)*A001359(n)).

%e 0.47799932... = 1/15 + 1/33 + 1/51 + 1/55 + 1/85 + 1/87 + ...

%Y Cf. A001359, A342714, A356793, A357934.

%Y Cf. A209328.

%K nonn,cons,hard,more

%O 0,1

%A _Artur Jasinski_, Jan 18 2025