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A306182
Number of unrooted self-avoiding walks with n steps that can make turns from the set 0, +-Pi/6, +-2*Pi/6, +-3*Pi/6, +-4*Pi/6, +-5*Pi/6.
10
1, 6, 33, 306, 2765, 26290
OFFSET
1,2
COMMENTS
The turning angles are those of the regular 12-gon, with one vertex corresponding to the forbidden U-turn. The path may neither intersect nor touch itself anywhere.
KEYWORD
nonn,walk,more
AUTHOR
Hugo Pfoertner, Jun 23 2018
STATUS
approved