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A193054 Number of closed Knight's tours on a 7 X 2n board. 1

%I #17 Jul 14 2020 07:43:54

%S 0,0,1067638,34524432316,1250063279938854,38350427205194670084,

%T 1254934986399237346242334,40157773188600794694366079616,

%U 1293153423896688571314211086231916,41575689378315795601749194654016984354,1337089200028352592236847382536061361269314

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

%H Zhao Hui Du, <a href="/A193054/b193054.txt">Table of n, a(n) for n = 1..15</a>

%H <a href="http://bbs.emath.ac.cn/thread-3231-5-1.html">Chinese Web for the result</a> by KeyTo9_Fans

%Y Cf. A175881.

%K nonn

%O 1,3

%A _Zhao Hui Du_, Jul 15 2011

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)