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A019447
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Number of monomials in expansion of determinant of an n X n Toeplitz matrix [ t(|i-j|) ] in terms of its entries.
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3
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1, 1, 2, 4, 12, 35, 120, 427, 1628, 6090, 23797, 90296, 350726, 1338076, 5165957, 19732508
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OFFSET
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0,3
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LINKS
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MAPLE
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with(LinearAlgebra): f:=n->nops([coeffs(Determinant(Matrix(n, (i, j) -> a[abs(i-j)])))]): [seq(f(n), n=0..12)];
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MATHEMATICA
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f[n_] := Length[ Expand[ Det[ Table[ t[ Abs[ i - j]], {i, 1, n}, {j, 1, n}]]]]; Table[ f[n], {n, 1, 11}]
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CROSSREFS
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KEYWORD
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nonn,more,hard
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AUTHOR
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Herbert S. Wilf
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EXTENSIONS
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STATUS
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approved
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