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A006732 Series for first parallel moment of square lattice.
(Formerly M1837)
+0
1
0, 2, 8, 22, 52, 112, 228, 442, 832, 1516, 2720, 4754, 8264, 14000, 23824, 39318, 66052, 106282, 177884, 277936, 469384, 703924, 1225052, 1718226, 3203156, 3974696, 8551248, 8307370, 23950704, 13195606, 72779892, -1798186, 246605280, -165440790, 935635244, -1166043794, 3896720688, -6470965954, 17297466660, -33101156302, 79718300900, -163586078926 (list; graph; listen)
OFFSET

0,2

REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

J. W. Essam, A. J. Guttmann and K. De'Bell, On two-dimensional directed percolation, J. Phys. A 21 (1988), 3815-3832.

Jensen, Iwan; Guttmann, Anthony J.; Series expansions of the percolation probability for directed square and honeycomb lattices. J. Phys. A 28 (1995), no. 17, 4813-4833.

LINKS

I. Jensen, Table of n, a(n) for n = 0..158 (from link below)

I. Jensen, More terms

CROSSREFS

Sequence in context: A094533 A006696 A094939 this_sequence A005803 A145654 A074352

Adjacent sequences: A006729 A006730 A006731 this_sequence A006733 A006734 A006735

KEYWORD

sign

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Simon Plouffe (simon.plouffe(AT)gmail.com)

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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