

A034919


Minimal consecutive determinant (negated) of n X n persymmetric matrix with entries {1,0,+1}.


4



1, 2, 4, 8, 28, 86, 325, 836, 4764, 20077, 92417, 295457
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OFFSET

1,2


COMMENTS

A persymmetric (or Hankel) matrix has M[ i,j ] = M[ ik,j+k ] for all i and j (matrix is constant along antidiagonals).
I would love to find out what "consecutive" means here! Adjacent entries along the top row and right side must be consecutive?  N. J. A. Sloane, May 16 2003
Interpretation: largest m such that for each d for which m <= d <= 0 a matrix with determinant d exists.  Bert Dobbelaere, Jan 26 2019


LINKS

Table of n, a(n) for n=1..12.


CROSSREFS

Cf. A034917, A034918, A034920, A034921.
Sequence in context: A302915 A259135 A219969 * A298682 A151340 A134316
Adjacent sequences: A034916 A034917 A034918 * A034920 A034921 A034922


KEYWORD

nonn,more


AUTHOR

Fred Lunnon, Dec 11 1999


EXTENSIONS

a(7)a(12) from Bert Dobbelaere, Jan 26 2019


STATUS

approved



