Powers of 2*Pi, rounded to the nearest integer.

Terms

a(0) =1a(1) =6a(2) =39a(3) =248a(4) =1559a(5) =9793a(6) =61529a(7) =386598a(8) =2429064a(9) =15262259a(10) =95895601a(11) =602529829a(12) =3785806568a(13) =23786924201a(14) =149457652642a(15) =939070127125