Number of regions after n generations of symmetrized Conant Gasket.

Terms

a(0) =1a(1) =2a(2) =3a(3) =5a(4) =9a(5) =16a(6) =30a(7) =52a(8) =95a(9) =174a(10) =326a(11) =618a(12) =1195a(13) =2300a(14) =4478a(15) =8764a(16) =17251a(17) =34038a(18) =67326a(19) =133858a(20) =266331a(21) =530876a(22) =1058146a(23) =2112904a(24) =4216075a(25) =8417830a(26) =16808282a(27) =33592910a(28) =67130923a(29) =134211556