A modified Pierce-type expansion for Pi: Pi = a(0) + Sum_{n>=1} (-1)^floor(n/2)/(Product_{i=1..n} a(i)).
A015884
A modified Pierce-type expansion for Pi: Pi = a(0) + Sum_{n>=1} (-1)^floor(n/2)/(Product_{i=1..n} a(i)).
Terms
- a(0) =3a(1) =7a(2) =113a(3) =4739a(4) =46804a(5) =134370a(6) =614063a(7) =1669512a(8) =15474115a(9) =18858140a(10) =19180902a(11) =41486462a(12) =492988666a(13) =1794101482a(14) =34644610027a(15) =48670872793a(16) =97414216753a(17) =138669015304a(18) =195575194804a(19) =543142431219
External references
- oeis: A015884