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A238816
Number of Hamiltonian cycles on 2n X 2n grid with at least the symmetry of reflection in an axis.
0
1, 4, 44, 2828, 564468, 754425400, 3079904455096, 88444819222239178, 7685637690960745082050, 4793315937811919497089287562
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..10.
Ed Wynn,
Enumeration of nonisomorphic Hamiltonian cycles on square grid graphs
, arXiv preprint arXiv:1402.0545 [math.CO], 2014.
CROSSREFS
Cf.
A003763
.
Sequence in context:
A157193
A224784
A243221
*
A327196
A024254
A167781
Adjacent sequences:
A238813
A238814
A238815
*
A238817
A238818
A238819
KEYWORD
nonn
,
more
AUTHOR
N. J. A. Sloane
, Mar 05 2014
STATUS
approved
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Last modified April 25 16:45 EDT 2024. Contains 371989 sequences. (Running on oeis4.)