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A306176
Number of symmetric unrooted self-avoiding walks of n steps on hexagonal lattice.
4
1, 3, 4, 12, 18, 50, 78, 208, 337
OFFSET
1,2
CROSSREFS
Sequence in context: A026891 A064140 A064139 * A026744 A347257 A123765
KEYWORD
nonn,walk,more
AUTHOR
Hugo Pfoertner, Jun 25 2018
STATUS
approved