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A351240
Numerator of the maximal sum of inverse squares of the singular values of symmetric Toeplitz anti-Hadamard matrices of order n.
3
1, 2, 7, 10, 37, 34, 107, 262, 661, 2236, 5665, 13350, 35141, 260188, 382614, 418134, 9552743681459, 83369851038, 785598689
OFFSET
1,2
LINKS
R. L. Graham and N. J. A. Sloane, Anti-Hadamard matrices, Linear Alg. Applic., 62 (1984), 113-137.
CROSSREFS
Cf. A005312, A005313, A351241 (denominator).
Sequence in context: A015963 A293002 A056656 * A151346 A247166 A110739
KEYWORD
nonn,frac,more
AUTHOR
Stefano Spezia, Feb 05 2022
STATUS
approved