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A365944
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Irregular triangle read by rows: T(N,k) (0 <= k <= 4*N^2) are coefficients of cluster density function for site percolation on a 2*N X 2*N 2D hexagonal lattice with periodic boundary conditions.
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4
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0, 4, 8, 4, 1, 0, 16, 216, 1344, 5100, 13152, 24304, 33056, 33464, 25264, 14248, 6112, 2084, 576, 120, 16, 1, 0, 36, 1152, 17820, 177426, 1277262, 7079808, 31421718, 114650784, 350474142, 910294965, 2031036588, 3927868917, 6635523816, 9862330248, 12985500660, 15247918890, 16066928502, 15272213638, 13143857346, 10260330822, 7263259932, 4653902178, 2690524944, 1397524095, 648817524, 267527043, 97208878, 30826998, 8428590, 1956162, 377550, 58923, 7140, 630, 36, 1
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OFFSET
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1,2
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COMMENTS
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The cluster density function is (1/(4*N^2))*Sum_{k=0..4*N^2} T(N,k)*p^k*(1-p)^(4*N^2-k).
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LINKS
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EXAMPLE
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Triangle begins:
0, 4, 8, 4, 1;
0, 16, 216, 1344, 5100, 13152, 24304, 33056, 33464, 25264, 14248, 6112, 2084, 576, 120, 16, 1;
0, 36, 1152, 17820, 177426, 1277262, 7079808, 31421718, 114650784, 350474142, 910294965, 2031036588, 3927868917, 6635523816, 9862330248, 12985500660, 15247918890, 16066928502, 15272213638, 13143857346, 10260330822, 7263259932, 4653902178, 2690524944, 1397524095, 648817524, 267527043, 97208878, 30826998, 8428590, 1956162, 377550, 58923, 7140, 630, 36, 1;
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CROSSREFS
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KEYWORD
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nonn,tabf
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AUTHOR
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EXTENSIONS
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The DATA shows three rows of the triangle.
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STATUS
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approved
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