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A006780
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Number of n-step spirals on cubic lattice.
(Formerly M4163)
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0
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1, 6, 24, 90, 324, 1166, 4138, 14730, 51992, 183898, 646980, 2279702, 8002976, 28127418, 98585096, 345848306, 1210704274, 4241348770, 14833284544
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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REFERENCES
| A. J. Guttmann and K. J. Wallace, On three-dimensional spiral anisotropic self-avoiding walks, J. Phys. A 18 (1985), L1049-L1054.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
G. Szekeres and A. J. Guttmann, Spiral self-avoiding walks on the triangular lattice, J. Phys. A 20 (1987), 481-493.
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CROSSREFS
| Sequence in context: A025472 A181618 A002919 * A001352 A155602 A179716
Adjacent sequences: A006777 A006778 A006779 * A006781 A006782 A006783
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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