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Number of alternating link diagrams with n crossings, 1 connected component and two external legs.
1

%I #4 Mar 30 2012 16:49:06

%S 1,12,114,1030,9290,84840,787082,7415814,70867212,685839770,

%T 6712285600,66349573368,661680191832,6651030871168,67329662060890,

%U 685953949494774,7028941367108708,72403769391718890

%N Number of alternating link diagrams with n crossings, 1 connected component and two external legs.

%H J. L. Jacobsen and P. Zinn-Justin, <a href="http://arXiv.org/abs/math-ph/0104009">A Transfer Matrix approach to the Enumeration of Colored Links</a>, J. Knot Theory, 10 (2001), 1233-1267.

%Y A column of A062038.

%K nonn

%O 2,2

%A _N. J. A. Sloane_, Feb 09 2002