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A006734 Series for second perpendicular moment of square lattice.
(Formerly M1839)
1
0, 2, 8, 24, 60, 136, 288, 582, 1132, 2138, 3940, 7114, 12632, 22080, 38160, 65056, 110172, 184032, 306968, 503650, 831408, 1340338, 2201840, 3479116, 5733312, 8814468, 14772040, 21734370, 37997724, 51650456, 98952836, 115227474, 266750996, 223323542, 768153044, 261658998, 2443777216, -717803658, 8754481712, -8229926352, 35018197920, -51106610852 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
REFERENCES
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
LINKS
I. Jensen, Table of n, a(n) for n = 0..158 (from link below)
J. W. Essam, A. J. Guttmann and K. De'Bell, On two-dimensional directed percolation, J. Phys. A 21 (1988), 3815-3832.
I. Jensen, More terms
Iwan Jensen, Anthony J. Guttmann, Series expansions of the percolation probability for directed square and honeycomb lattices, arXiv:cond-mat/9509121, 1995; J. Phys. A 28 (1995), no. 17, 4813-4833.
CROSSREFS
Sequence in context: A182736 A083553 A051745 * A131064 A263598 A075218
KEYWORD
sign
AUTHOR
STATUS
approved

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Last modified March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)