A222065 a(n) = A143246(2n).

2, 12, 2144, 9277152, 934520913216, 2152453777211211412, 112252999240982874562527216, 131765033045251672652319572331061144, 3467852755777932367855581588111341658695967892

Offset: 1

Author

N. J. A. Sloane, Feb 08 2013

Keywords

• nonn

Links

• Ed Wynn, Enumeration of nonisomorphic Hamiltonian cycles on square grid graphs, arXiv preprint arXiv:1402.0545 [math.CO], 2014.
• Index entries for sequences related to graphs, Hamiltonian

Crossrefs

Cf. A143246.