login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A121071 Nonisomorphic catacondensed monoheptafusenes (see reference for precise definition). 2
0, 0, 2, 6, 32, 132, 600, 2628, 11768, 52608, 237266 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

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.

FORMULA

See A044046 for g.f. and other formulae.

CROSSREFS

Equals twice A044046.

Sequence in context: A109243 A108327 A196010 * A092199 A108485 A018940

Adjacent sequences:  A121068 A121069 A121070 * A121072 A121073 A121074

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 17 02:43 EST 2012. Contains 205978 sequences.