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%I #13 Jun 30 2023 12:19:42
%S 1,14,162,1966,25567,351880,5056350,75100735,1144833705,17821104101
%N Number of continuations arising in matrix method for enumerating Hamiltonian cycles on 2n X 2n grid.
%H Ed Wynn, <a href="http://arxiv.org/abs/1402.0545">Enumeration of nonisomorphic Hamiltonian cycles on square grid graphs</a>, arXiv preprint arXiv:1402.0545 [math.CO], 2014.
%Y Cf. A003763, A143246, A209077, A222065, A238115, A238117, A238118.
%K nonn,hard,more
%O 1,2
%A _N. J. A. Sloane_, Mar 05 2014
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