A045904 - OEIS

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A045904

Nonisomorphic catacondensed monoheptafusenes (see reference for precise definition).

0, 0, 0, 1, 5, 31, 160, 825, 4074, 19902, 95920

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OFFSET

0,5

REFERENCES

B. N. Cyvin et al., A class of polygonal systems representing polycyclic conjugated hydrocarbons ..., Monat. f. Chemie, 125 (1994), 1327-1337 (see Table 1).

S. J. Cyvin et al., Enumeration and classification of certain polygonal systems... : annelated catafusenes, J. Chem. Inform. Comput. Sci., 34 (1994), 1174-1180.

LINKS

Table of n, a(n) for n=0..10.

CROSSREFS

3rd column of A121178.

Sequence in context: A293028 A165610 A092496 * A034353 A294722 A237622

Adjacent sequences: A045901 A045902 A045903 * A045905 A045906 A045907

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

STATUS

approved