[seqfan] Re: a new lattice walk
David Scambler
dscambler at bmm.com
Thu May 9 03:25:39 CEST 2013
The same rules, but self-avoiding, apparently is counted by
A004006<https://oeis.org/A004006>
C(n,1) + C(n,2) + C(n,3), or n*(n^2+5)/6.
dave
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