A122660 Number of knot polyhedra with 2n nodes.

0, 1, 0, 3, 4, 22, 70, 482, 2955, 17907, 114642, 825097, 5843386, 41036436, 297986872

Offset

2,4

Links

Table of n, a(n) for n=2..16.

M. Deza, M. Dutour and P. W. Fowler, Zigzags, railroads and knots in fullerenes, J. Chem. Inf. Comput. Sci., 44 (2004), 1282-1293.

Lee Zheng Han, A122660

Crossrefs

Sequence in context: A057791 A167452 A316192 * A163744 A221643 A042595

Adjacent sequences: A122657 A122658 A122659 * A122661 A122662 A122663

Keyword

nonn,more

Author

N. J. A. Sloane, Sep 22 2006

Extensions

a(11) corrected by and a(13) from Lee Zheng Han, Oct 30 2019

a(14) from Lee Zheng Han, Feb 24 2020

a(15) and a(16) from Lee Zheng Han, Jul 11 2023

Status

approved