Number of bridged bicyclic skeletons with n carbon atoms (see Parks et al. for precise definition).

A121328

Number of bridged bicyclic skeletons with n carbon atoms (see Parks et al. for precise definition).

Terms

    a(0) =1a(1) =2a(2) =6a(3) =15a(4) =41a(5) =106a(6) =288a(7) =777a(8) =2113a(9) =5772a(10) =15817a(11) =43422a(12) =119444a(13) =329003a(14) =907181a(15) =2503971a(16) =6916822a(17) =19120891a(18) =52892130a(19) =146399126a(20) =405437427

External references