OFFSET
1,1
COMMENTS
Let n be a positive integer, n>3. Define a tournament on the vertex set {2,3,...n} by: for i< j, i is adjacent to j if i divides j, else, j is adjacent to i and let T(n) be its adjacency matrix. It appears that values of n for which det(T(n)) is odd are rather sparse.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Rebecca A. Winslow (raw5(AT)students.uwf.edu), Aug 21 2001
EXTENSIONS
Offset correct, a(1) inserted, and a(22)-a(48) from Sean A. Irvine, May 18 2023
STATUS
approved