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A003291
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Number of n-step self-avoiding walks on hexagonal lattice from (0,0) to (1,1).
(Formerly M1613)
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7
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2, 6, 16, 46, 140, 464, 1580, 5538, 19804, 71884, 264204, 980778, 3671652, 13843808, 52519836, 200320878, 767688176, 2954410484, 11412815256, 44237340702, 171997272012, 670612394118, 2621415708492, 10271274034254
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OFFSET
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2,1
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COMMENTS
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The hexagonal lattice is the familiar 2-dimensional lattice in which each point has 6 neighbors. This is sometimes called the triangular lattice.
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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CROSSREFS
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KEYWORD
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nonn,walk,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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