a(n) = Product_{k=1..n} (p(k+1) + p(k))/(p(k+1) - p(k)), where p(k) = prime(k).

A352743

a(n) = Product_{k=1..n} (p(k+1) + p(k))/(p(k+1) - p(k)), where p(k) = prime(k).

Terms

    a(0) =1a(1) =5a(2) =20a(3) =120a(4) =540a(5) =6480a(6) =48600a(7) =874800a(8) =9185400a(9) =79606800a(10) =2388204000a(11) =27066312000a(12) =527793084000

External references