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Number of isomorphism classes of IPR nanocones with 3 pentagons and a symmetric boundary of length n.
4

%I #7 Jan 29 2023 07:25:41

%S 0,0,2,4,10,16,29,41,64,85,120,153,203,250,318,382

%N Number of isomorphism classes of IPR nanocones with 3 pentagons and a symmetric boundary of length n.

%H Gunnar Brinkmann and Nico Van Cleemput, <a href="https://doi.org/10.1016/j.dam.2011.06.014">Classification and generation of nanocones</a>, Discrete Applied Mathematics, 159 (2011), 1528-1539.

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

%Y Cf. A219902, A219903, A219904, A219905.

%K nonn,more

%O 0,3

%A _N. J. A. Sloane_, Dec 01 2012