a(n) is the number of n X n nonsingular symmetric Toeplitz matrices using all the integers 1, 2, ..., n.
A364231
a(n) is the number of n X n nonsingular symmetric Toeplitz matrices using all the integers 1, 2, ..., n.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =24a(4) =120a(5) =718a(6) =5005a(7) =40274a(8) =362604a(9) =3627915a(10) =39909566a(11) =478991256
External references
- oeis: A364231