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A006835 Percolation series for directed square lattice.
(Formerly M2742)
+0
1
1, 0, -1, -3, -8, -21, -56, -154, -434, -1252, -3675, -10954, -33044, -100676, -309569, -957424, -2987846, -9330274, -29522921, -92459524, -298142956, -922424269, -3098690837, -9042937179, -34187149573, -79544646085 (list; graph; listen)
OFFSET

0,4

REFERENCES

K. De'Bell and J. W. Essam, Estimates of the site percolation probability exponents for some directed lattices, J. Phys. A 16 (1983), 3145-3147.

Iwan Jensen and Anthony J. Guttmann, Series Expansions of the Percolation Probability for Directed Square and Honeycomb Lattices, J. Phys. A 28 (1995), 4813-4833.

R. N. Onody and U. P. C. Neves, Series Expansion of the Directed Percolation Probability, J. Phys. A 25 (1992), 6609-6615.

LINKS

I. Jensen, Table of n, a(n) for n = 0..37 (from link below)

I. Jensen, More terms

CROSSREFS

Sequence in context: A085560 A094374 A008909 this_sequence A014318 A018037 A018038

Adjacent sequences: A006832 A006833 A006834 this_sequence A006836 A006837 A006838

KEYWORD

sign

AUTHOR

njas and Simon Plouffe (plouffe(AT)math.uqam.ca)

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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