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 A119003 Maximal determinant of real n X n symmetric (+1,-1) matrices. 4
 1, 0, 4, 16, 48, 160, 576, 4096, 14336 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Computation of the determinant of these two matrices: {-1, -1, -1, -1, 1, 1, 1, -1}, {-1, 1, -1, 1, 1, 1, -1, 1}, {-1, -1, 1, 1, 1, -1, -1, -1}, {-1, 1, 1, 1, -1, 1, 1, -1}, { 1, 1, 1, -1, 1, 1, -1, -1}, { 1, 1, -1, 1, 1, -1, 1, -1}, { 1, -1, -1, 1, -1, 1, -1, -1}, {-1, 1, -1, -1, -1, -1, -1, -1} and {-1, 1, 1, -1, 1, -1, 1, 1, 1}, { 1, -1, 1, -1, 1, 1, 1, 1, -1}, { 1, 1, 1, 1, 1, -1, -1, 1, -1}, {-1, -1, 1, 1, -1, 1, 1, -1, 1}, { 1, 1, 1, -1, -1, -1, 1, -1, -1}, {-1, 1, -1, 1, -1, 1, 1, 1, -1}, { 1, 1, -1, 1, 1, 1, 1, -1, 1}, { 1, 1, 1, -1, -1, 1, -1, 1, 1}, { 1, -1, -1, 1, -1, -1, 1, 1, 1} shows that a(8) = A003433(8) = 4096 and a(9) = A003433(9) = 14336. - Jean-François Alcover, Nov 19 2017 LINKS Table of n, a(n) for n=1..9. Index entries for sequences related to maximal determinants CROSSREFS Cf. A003433, A119002, A119001, A119005. Sequence in context: A058922 A215723 A034918 * A220329 A222387 A366608 Adjacent sequences: A119000 A119001 A119002 * A119004 A119005 A119006 KEYWORD nonn,more AUTHOR Giovanni Resta, May 08 2006 EXTENSIONS a(8) and a(9) from Jean-François Alcover, Nov 19 2017 STATUS approved

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Last modified December 4 01:51 EST 2023. Contains 367541 sequences. (Running on oeis4.)