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A006732
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Series for first parallel moment of square lattice.
(Formerly M1837)
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1
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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; refs; listen; history; internal format)
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OFFSET
| 0,2
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REFERENCES
| 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.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
| I. Jensen, Table of n, a(n) for n = 0..158 (from link below)
I. Jensen, More terms
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CROSSREFS
| Sequence in context: A094533 A006696 A094939 * A005803 A145654 A074352
Adjacent sequences: A006729 A006730 A006731 * A006733 A006734 A006735
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KEYWORD
| sign
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Simon Plouffe (simon.plouffe(AT)gmail.com)
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