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A121070 Nonisomorphic catacondensed monoheptafusenes (see reference for precise definition). 1
1, 1, 4, 13, 56, 234, 1034, 4570, 20492, 92329, 418896 (list; graph; refs; listen; history; text; 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).
LINKS
CROSSREFS
Equals sum of columns of triangle whose successive columns are A000007, A044045, A121071, A045904, ...
Sequence in context: A149475 A149476 A121076 * A163070 A239981 A243549
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Aug 10 2006
STATUS
approved

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Last modified June 21 05:50 EDT 2024. Contains 373540 sequences. (Running on oeis4.)