a(n) is the least number of sides of a regular circumscribed k-gon whose perimeter yields Pi to within 1/10^n.
A259442
a(n) is the least number of sides of a regular circumscribed k-gon whose perimeter yields Pi to within 1/10^n.
Terms
- a(0) =4a(1) =11a(2) =33a(3) =102a(4) =322a(5) =1017a(6) =3215a(7) =10167a(8) =32149a(9) =101664a(10) =321488a(11) =1016633a(12) =3214876a(13) =10166330a(14) =32148757a(15) =101663296a(16) =321487567a(17) =1016632951a(18) =3214875668a(19) =10166329505a(20) =32148756680a(21) =101663295049a(22) =321487566791
External references
- oeis: A259442