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%I #9 Jan 10 2019 22:39:31
%S 2,2,32,104,10180,111712,67590888,2688307514,9628765945000,
%T 1445778936756068,29725924602729604016,17337631013706758184626,
%U 1998903003325610328086958408,4628650743368437273677525554148
%N "Crossing Hamiltonian walks" on the square lattice (see Jensen web site for further information).
%H I. Jensen, <a href="/A121788/b121788.txt">Table of n, a(n) for n = 1..17</a> [from the Jensen link below]
%H I. Jensen, <a href="https://web.archive.org/web/20070612141707/http://www.ms.unimelb.edu.au/~iwan/saw/SAW_ser.html">Series Expansions for Self-Avoiding Walks</a>
%H I. Jensen, <a href="https://web.archive.org/web/20070613021747/http://www.ms.unimelb.edu.au/~iwan/saw/series/hami_cross.ser">Crossing Hamiltonian walks</a>
%K nonn
%O 1,1
%A _N. J. A. Sloane_, Aug 30 2006
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