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A222065 A143246(2n). 5
2, 12, 2144, 9277152, 934520913216, 2152453777211211412, 112252999240982874562527216, 131765033045251672652319572331061144, 3467852755777932367855581588111341658695967892 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..9.

Ed Wynn, Enumeration of nonisomorphic Hamiltonian cycles on square grid graphs, arXiv preprint arXiv:1402.0545, 2014

Index entries for sequences related to graphs, Hamiltonian

CROSSREFS

Sequence in context: A085895 A090904 A125295 * A253788 A252738 A050649

Adjacent sequences:  A222062 A222063 A222064 * A222066 A222067 A222068

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Feb 08 2013

STATUS

approved

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Last modified November 20 20:46 EST 2019. Contains 329347 sequences. (Running on oeis4.)