A323927 Number of peri-condensed or cyclic peri-condensed non-Kekuléan planar polycyclic aromatic hydrocarbons with n hexagons.

0, 0, 1, 0, 1, 3, 9, 27, 119

Offset

1,6

Links

Table of n, a(n) for n=1..9.

Wenchen He and Wenjie He, Generation and enumeration of planar polycyclic aromatic hydrocarbons, Tetrahedron 42.19 (1986): 5291-5299. See Table 1.

Crossrefs

Cf. A003104, A323923-A323930.

Sequence in context: A230951 A121746 A391986 * A146151 A306681 A254334

Adjacent sequences: A323924 A323925 A323926 * A323928 A323929 A323930

Keyword

nonn,more

Author

N. J. A. Sloane, Feb 09 2019

Status

approved