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 A215724 Maximum absolute value of determinant of n X n (1,-1)-Toeplitz matrix. 3
 1, 2, 4, 16, 48, 160, 576, 2560, 12288, 73728, 327680, 2097152, 14929920, 68853760 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 REFERENCES Warren D. Smith, Posting to the Math Fun Mailing List, August 18, 2012. LINKS Wikipedia, Toeplitz Matrix MAPLE a:=proc(n) local T, b, U, M, d, r; T:= combinat:-cartprod([seq({-1, 1}, j = 1..2*n-1)]); b:= 0; while not T[finished] do    U := T[nextvalue]();    M := LinearAlgebra:-ToeplitzMatrix(U, n);    d:= abs(LinearAlgebra:-Determinant(M)):    if d > b then b := d; end if; end do; return b; end proc: CROSSREFS Cf. A086432 (same for circulant (0,1) matrices), A215724 (same for circulant (+1,-1) matrices). Sequence in context: A103435 A119000 A034917 * A003433 A153951 A248748 Adjacent sequences:  A215721 A215722 A215723 * A215725 A215726 A215727 KEYWORD nonn,hard,more AUTHOR W. Edwin Clark, Aug 22 2012 STATUS approved

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Last modified April 6 21:24 EDT 2020. Contains 333286 sequences. (Running on oeis4.)