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A198014 Number of isomorphism classes of nanocones with 3 pentagons and a nearsymmetric boundary of length n 7

%I

%S 2,8,18,37,63,104,153,224,305,413,534,688,856,1064,1288,1557,1845,

%T 2184,2543,2960,3399,3901,4428,5024,5646,6344,7070,7877,8715,9640,

%U 10597,11648,12733,13917,15138,16464,17828,19304,20820,22453,24129,25928,27771,29744

%N Number of isomorphism classes of nanocones with 3 pentagons and a nearsymmetric boundary of length n

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

%H Nico Van Cleemput, <a href="/A198014/b198014.txt">Table of n, a(n) for n = 1..75</a>

%F Conjectured g.f.: (3*x^5 + 2*x^4 + 5*x^3 + 6*x^2 + 6*x + 2)*x/((x - 1)^4*(x + 1)^2*(x^2 + x + 1)). [D. S. McNeil, Oct 20 2011]

%K nonn

%O 1,1

%A _Nico Van Cleemput_, Oct 20 2011

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Last modified February 26 03:00 EST 2021. Contains 341619 sequences. (Running on oeis4.)