Number of 5X5 0..n arrays with each 2X2 subblock off diagonal and antidiagonal nonsingular and the array of 2X2 subblock determinants antisymmetric about the diagonal and antidiagonal.
A187708
Number of 5X5 0..n 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) =34a(1) =5030a(2) =81456a(3) =875696a(4) =4225652a(5) =22532156a(6) =67940472a(7) =225606354a(8) =577091334a(9) =1469652502
External references
- oeis: A187708