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%I #11 Feb 19 2021 18:35:53
%S 1,0,3,18,138,1278,13410,154584,1919352,25273422,348989058,5011939788,
%T 74393974476,1135821378924
%N Number of 2n-step self-avoiding closed walks on first octant of 3-dimensional cubic lattice, passing through origin.
%H Sean A. Irvine, <a href="https://github.com/archmageirvine/joeis/blob/master/src/irvine/oeis/a039/A039618.java">Java program</a> (github)
%Y Cf. A001409, A034010.
%K nonn,walk,hard,more
%O 0,3
%A _David W. Wilson_
%E a(11)-a(13) from _Sean A. Irvine_, Feb 19 2021
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