A259352 Number of generalized fusenes with n heptagons.

1, 1, 3, 10, 44, 249, 1513, 10002, 68455, 482571, 3470782, 25391403, 188353848, 1414150643, 10728851795, 82151290333, 634203702080, 4931994064073, 38607981904156, 304032521364835

Offset

1,3

Links

Table of n, a(n) for n=1..20.

G. Brinkmann, O. Delgado Friedrichs, S. Lisken, A. Peeters, N. Van Cleemput, CaGe - a Virtual Environment for Studying Some Special Classes of Plane Graphs

G. Brinkmann and P. Goetschalckx, Enumeration of Generalized Fusenes, MATCH: Communications in Mathematical and in Computer Chemistry, 74(3) (2015), 505-520.

Eric Weisstein's World of Mathematics, Fusene

Crossrefs

Cf. A108070, A259351, A259353, A259354, A259355.

Sequence in context: A000608 A381867 A333018 * A205803 A329258 A009648

Adjacent sequences: A259349 A259350 A259351 * A259353 A259354 A259355

Keyword

nonn

Author

Pieter Goetschalckx, Jun 24 2015

Status

approved