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A259351 Number of generalized fusenes with n pentagons. 5
1, 1, 2, 4, 7, 18, 35, 87, 206, 527, 1337, 3524, 9262, 24772, 66402, 179589, 487435, 1330708, 3645754, 10031143, 27691894, 76708835, 213122892, 593851624, 1659104995, 4646951873, 13046181167, 36708619646, 103505545079, 292430771955, 827749791118, 2347201206583, 6667102499129, 18968089092814 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..34.

G. Brinkmann, O. Delgado-Friedrichs, S. Lisken, A. Peeters, and 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, A259352, A259353, A259354, A259355.

Sequence in context: A290877 A103032 A215649 * A232484 A223013 A276027

Adjacent sequences:  A259348 A259349 A259350 * A259352 A259353 A259354

KEYWORD

nonn

AUTHOR

Pieter Goetschalckx, Jun 24 2015

STATUS

approved

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Last modified February 24 23:02 EST 2018. Contains 299629 sequences. (Running on oeis4.)