Number of weighted voting procedures.

Terms

a(0) =1a(1) =3a(2) =6a(3) =12a(4) =23a(5) =45a(6) =87a(7) =171a(8) =336a(9) =666a(10) =1320a(11) =2628a(12) =5233a(13) =10443a(14) =20841a(15) =41637a(16) =83187a(17) =166287a(18) =332403a(19) =664635a(20) =1328934a(21) =2657532a(22) =5314398a(23) =10628130a(24) =21254940a(25) =42508560a(26) =85014492a(27) =170026356a(28) =340047479a(29) =680089725