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A167159 Number of n-vertex 7-hedrites. 4
0, 0, 0, 0, 0, 1, 1, 1, 3, 4, 5, 7, 9, 12, 18, 22, 25, 36, 46, 48, 62, 76, 88, 107, 126, 142, 179, 198, 216, 257, 304, 329, 382, 431, 483, 547, 601, 643, 764, 838, 889, 998, 1134, 1197, 1324, 1435, 1574, 1751, 1874, 1963, 2247, 2419, 2511, 2735, 3041, 3187, 3453 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,9

COMMENTS

A k-hedrite is a 4-regular planar graph whose faces have sizes 2, 3 and 4 only and the total number of faces of sizes 2 and 3 is k.

LINKS

Table of n, a(n) for n=2..58.

Mathieu Dutour Sikiric, Michel Deza, 4-regular and self-dual analogs of fullerenes, arXiv:0910.5323 [math.GT], 2009.

CROSSREFS

Cf. A167156, A167157, A167158, A167160.

Sequence in context: A104805 A260996 A102822 * A226918 A227391 A209721

Adjacent sequences:  A167156 A167157 A167158 * A167160 A167161 A167162

KEYWORD

nonn

AUTHOR

Jonathan Vos Post, Oct 29 2009

EXTENSIONS

New name from Andrey Zabolotskiy, Jul 05 2017

STATUS

approved

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Last modified September 15 02:19 EDT 2019. Contains 327062 sequences. (Running on oeis4.)