A193054 Number of closed Knight's tours on a 7 X 2n board.

0, 0, 1067638, 34524432316, 1250063279938854, 38350427205194670084, 1254934986399237346242334, 40157773188600794694366079616, 1293153423896688571314211086231916, 41575689378315795601749194654016984354, 1337089200028352592236847382536061361269314

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