Successive numerators of Wallis's approximation to Pi/2 (unreduced).
A001900
Successive numerators of Wallis's approximation to Pi/2 (unreduced).
Terms
- a(0) =1a(1) =2a(2) =4a(3) =16a(4) =64a(5) =384a(6) =2304a(7) =18432a(8) =147456a(9) =1474560a(10) =14745600a(11) =176947200a(12) =2123366400a(13) =29727129600a(14) =416179814400
External references
- oeis: A001900