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A000935 Number of free planar polyenoids with 2n nodes. 1
0, 1, 2, 7, 20, 63, 191 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

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

CROSSREFS

Sequence in context: A014983 A015518 A083379 * A035071 A055891 A122877

Adjacent sequences:  A000932 A000933 A000934 * A000936 A000937 A000938

KEYWORD

nonn

AUTHOR

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

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Last modified February 16 05:32 EST 2012. Contains 205860 sequences.