A067768 Number of alternating link diagrams with n crossings, 3 connected components and two external legs.

22, 728, 14884, 244908, 3575045, 48517524, 628013796, 7871666088, 96451145091, 1162484964230, 13840075278704, 163246693686684, 1911737961254907, 22262254374655710

Offset: 6

Author

N. J. A. Sloane, Feb 09 2002

Keywords

• nonn

Links

• J. L. Jacobsen and P. Zinn-Justin, A Transfer Matrix approach to the Enumeration of Colored Links, J. Knot Theory, 10 (2001), 1233-1267.

Crossrefs

A column of A062038.