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A193054 Number of closed Knight's tours on a 7 X 2n board. 1
0, 0, 1067638, 34524432316, 1250063279938854, 38350427205194670084, 1254934986399237346242334, 40157773188600794694366079616, 1293153423896688571314211086231916, 41575689378315795601749194654016984354, 1337089200028352592236847382536061361269314 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Zhao Hui Du, Table of n, a(n) for n = 1..15

Chinese Web for the result by KeyTo9_Fans

CROSSREFS

Cf. A175881.

Sequence in context: A076248 A234776 A081638 * A160687 A342328 A070042

Adjacent sequences:  A193051 A193052 A193053 * A193055 A193056 A193057

KEYWORD

nonn

AUTHOR

Zhao Hui Du, Jul 15 2011

STATUS

approved

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Last modified October 20 10:43 EDT 2021. Contains 348100 sequences. (Running on oeis4.)