Number of monocyclic skeletons with n carbon atoms and a ring size of 8.

Terms

a(0) =1a(1) =1a(2) =6a(3) =16a(4) =63a(5) =190a(6) =631a(7) =1923a(8) =5940a(9) =17706a(10) =52573a(11) =153442a(12) =444935a(13) =1277737a(14) =3648896a(15) =10357898a(16) =29278749a(17) =82435343a(18) =231393069a(19) =647760624a(20) =1809395471a(21) =5044728853a(22) =14043361916a(23) =39042161151a(24) =108423265447a(25) =300823420906a(26) =834004924385