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A065763
Number of invertible Steinhaus matrices of order n.
1
1, 0, 4, 3, 10, 12, 76, 122, 278, 596, 1502, 3057, 6758, 13643, 29333, 59454, 121967, 247085, 505007, 1016475, 2049676, 4115006, 8278499
OFFSET
2,3
COMMENTS
A Steinhaus matrix is the adjacency matrix of the corresponding Steinhaus graph. - Sean A. Irvine, Sep 13 2023
LINKS
Jonathan Chappelon, Regular Steinhaus graphs of odd degree, arXiv:0806.2779 [math.CO], 2008-2009.
Sean A. Irvine, Java program (github).
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Felix Goldberg (felixg(AT)tx.technion.ac.il), Dec 04 2001
EXTENSIONS
More terms from Vladeta Jovovic, Dec 07 2001
a(19)-a(24) from Sean A. Irvine, Sep 13 2023
STATUS
approved