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A171690 Number of parameter sequences of length n for which a certain 2-factor contains a Hamiltonian cycle (see reference for precise definition). 1
1, 1, 2, 6, 44, 614, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

The next term is at least 100.

LINKS

Table of n, a(n) for n=1..7.

Torsten Mütze and Franziska Weber, Construction of 2-factors in the middle layer of the discrete cube, arXiv preprint arXiv:1111.2413 [math.CO], 2011.

T. Mütze and F. Weber, Construction of 2-factors in the middle layer of the discrete cube, Journal of Combinatorial Theory, Series A, 119(8) (2012), 1832-1855.

CROSSREFS

Cf. A202302.

Sequence in context: A038180 A058925 A266855 * A259763 A219337 A259482

Adjacent sequences:  A171687 A171688 A171689 * A171691 A171692 A171693

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Jan 12 2012

STATUS

approved

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Last modified March 30 22:55 EDT 2020. Contains 333132 sequences. (Running on oeis4.)