Number of stereoisomeric paraffins with n carbon atoms.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =4a(7) =11a(8) =35a(9) =101a(10) =290a(11) =804a(12) =2256a(13) =6296a(14) =17689a(15) =49952a(16) =142016a(17) =406330a(18) =1170272a(19) =3390932a(20) =9882412a(21) =28955403a(22) =85261439a(23) =252213192a(24) =749250700a(25) =2234562027a(26) =6688670232a(27) =20088920730a(28) =60525912003a(29) =182895125096