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A306181
Number of unrooted self-avoiding walks with n steps that can make turns from the set +-Pi/11, +-3*Pi/11, +-5*Pi/11, +-7*Pi/11, +-9*Pi/11.
10
1, 5, 28, 235, 1970, 17201
OFFSET
1,2
COMMENTS
The turning angles are those of the regular 11-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