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A007200
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Number of self-avoiding walks on hexagonal lattice, with additional constraints.
(Formerly M4838)
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1
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12, 48, 180, 792, 3444, 15000, 64932, 280200, 1204572, 5159448, 22043292, 93952428, 399711348
(list; graph; refs; listen; history; internal format)
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OFFSET
| 2,1
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COMMENTS
| 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
| S. Redner, Distribution functions in the interior of polymer chains, J. Phys. A 13 (1980), 3525-3541.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
| G. Nebe and N. J. A. Sloane, Home page for hexagonal (or triangular) lattice A2
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CROSSREFS
| Cf. A007201.
Sequence in context: A190622 A117027 A161171 * A061148 A052601 A003498
Adjacent sequences: A007197 A007198 A007199 * A007201 A007202 A007203
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KEYWORD
| nonn,walk
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AUTHOR
| Simon Plouffe (simon.plouffe(AT)gmail.com)
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