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A219903 Number of isomorphism classes of IPR nanocones with 4 pentagons and a symmetric boundary of length n. 0
0, 0, 0, 0, 4, 15, 48, 111, 238, 441, 782, 1279, 2029, 3055, 4499, 6390 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

REFERENCES

G. Brinkmann and N. Van Cleemput, Classification and generation of nanocones, Discrete Applied Mathematics, 159 (2011), 1528-1539.

LINKS

Table of n, a(n) for n=0..15.

CROSSREFS

Cf. A197988, A198014, A198015, A198016, A198086, A219901-A219905.

Sequence in context: A100506 A173414 A307075 * A238807 A240333 A227099

Adjacent sequences:  A219900 A219901 A219902 * A219904 A219905 A219906

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Dec 01 2012

STATUS

approved

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Last modified January 25 17:34 EST 2022. Contains 350572 sequences. (Running on oeis4.)