OFFSET
1,2
LINKS
Wikipedia, Toeplitz Matrix
MATHEMATICA
a[n_]:=Count[Flatten[Table[MatrixRank[ToeplitzMatrix[Join[{d}, I Part[Permutations[Drop[Range[n], {d}]], i]]]], {i, (n-1)!}, {d, n}]], n]; Array[a, 9]
CROSSREFS
KEYWORD
nonn,hard,more
AUTHOR
Stefano Spezia, Jul 14 2023
STATUS
approved