Number of (n+1)X(n+1) 0..2 arrays with each 2X2 subblock off diagonal and antidiagonal nonsingular and the array of 2X2 subblock determinants antisymmetric about the diagonal and antidiagonal.
A187701
Number of (n+1)X(n+1) 0..2 arrays with each 2X2 subblock off diagonal and antidiagonal nonsingular and the array of 2X2 subblock determinants antisymmetric about the diagonal and antidiagonal.
Terms
- a(0) =31a(1) =1489a(2) =72a(3) =5030a(4) =36a(5) =7410a(6) =474a(7) =176936
External references
- oeis: A187701