A219903 Number of isomorphism classes of IPR nanocones with 4 pentagons and a symmetric boundary of length n.

0, 0, 0, 0, 4, 15, 48, 111, 238, 441, 782, 1279, 2029, 3055, 4499, 6390

Offset

0,5

Links

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

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

Crossrefs

Cf. A197988, A198014, A198015, A198016, A198086.

Cf. A219901, A219902, A219904, A219905.

Sequence in context: A100506 A173414 A307075 * A238807 A240333 A227099

Adjacent sequences: A219900 A219901 A219902 * A219904 A219905 A219906

Keyword

nonn,more

Author

N. J. A. Sloane, Dec 01 2012

Status

approved