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A351821
Maximal sum of inverse squares of the singular values of Toeplitz anti-Hadamard matrices of order n.
2
1, 3, 7, 16, 46, 138, 601, 2619, 16162, 93531, 654700, 4442304
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..12.
R. L. Graham and N. J. A. Sloane, Anti-Hadamard matrices, Linear Alg. Applic., 62 (1984), 113-137, Table 1.
CROSSREFS
Cf. A005312, A005313, A351240, A351241.
Sequence in context: A217358 A323692 A360782 * A005312 A341576 A143817
Adjacent sequences: A351818 A351819 A351820 * A351822 A351823 A351824
KEYWORD
nonn,hard,more
AUTHOR
Stefano Spezia, Feb 20 2022
EXTENSIONS
a(12) confirmed and inserted by Stefano Spezia, Mar 16 2022
STATUS
approved

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Last modified November 16 22:15 EST 2024. Contains 377807 sequences.
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