Smallest value of k such that Sum_{j=1..k} arctan(1/j) > n*Pi/2.
A230126
Smallest value of k such that Sum_{j=1..k} arctan(1/j) > n*Pi/2.
Terms
- a(0) =1a(1) =4a(2) =17a(3) =82a(4) =396a(5) =1905a(6) =9165a(7) =44088a(8) =212082a(9) =1020218a(10) =4907734a(11) =23608545a(12) =113568371a(13) =546318080a(14) =2628050766a(15) =12642178765a(16) =60814914995
External references
- oeis: A230126