a(n) is the least k such that a k-gon is the first polygon where an agreement of the areas of k-gons inscribed and circumscribed to a unit circle agree with the true value of Pi when truncated to n digits.
A391013
a(n) is the least k such that a k-gon is the first polygon where an agreement of the areas of k-gons inscribed and circumscribed to a unit circle agree with the true value of Pi when truncated to n digits.
Terms
- a(0) =12a(1) =23a(2) =114a(3) =187a(4) =1187a(5) =2792a(6) =5624a(7) =19640a(8) =75883a(9) =187211a(10) =1006284a(11) =7070162a(12) =7070162a(13) =39096822a(14) =79893185a(15) =294421149a(16) =733093917a(17) =2592846884a(18) =6684301055a(19) =18165258267a(20) =88429895180a(21) =179243862737a(22) =690268396727
External references
- oeis: A391013