Number of 5X5 0..n arrays with each 2X2 non-center subblock determinant nonzero and the array of 2X2 subblock determinants antisymmetric under 90 degree rotation.
A187627
Number of 5X5 0..n arrays with each 2X2 non-center subblock determinant nonzero and the array of 2X2 subblock determinants antisymmetric under 90 degree rotation.
Terms
- a(0) =948a(1) =324452a(2) =12278892a(3) =221177664a(4) =1896404966
External references
- oeis: A187627