A000936 Number of free planar polyenoids with n nodes and symmetry point group C_{2v}.

0, 0, 1, 1, 2, 4, 4, 12, 10, 29, 27, 88, 76, 247, 217, 722, 638, 2134, 1901, 6413

Offset: 1

Author

E. K. Lloyd (E.K.Lloyd(AT)soton.ac.uk)

Keywords

• nonn
• more

References

• S. J. Cyvin, J. Brunvoll, E. Brendsdal, B. N. Cyvin and E. K. Lloyd, Enumeration of polyene hydrocarbons: a complete mathematical solution, J. Chem. Inf. Comput. Sci., 35 (1995) 743-751.

Links

• S. J. Cyvin, J. Brunvoll, E. Brendsdal, B. N. Cyvin and E. K. Lloyd, Enumeration of polyene hydrocarbons: a complete mathematical solution, J. Chem. Inf. Comput. Sci., 35 (1995) 743-751. [Annotated scanned copy]

Extensions

a(16)-a(20) and title improved by Sean A. Irvine, Oct 14 2015