Number of (n+1)X(n+1) 0..4 arrays with the array of 2X2 subblock determinants antisymmetric under horizontal and vertical reflection and each non-centerline 2X2 subblock nonsingular.
A187632
Number of (n+1)X(n+1) 0..4 arrays with the array of 2X2 subblock determinants antisymmetric under horizontal and vertical reflection and each non-centerline 2X2 subblock nonsingular.
Terms
- a(0) =113a(1) =12104a(2) =106892a(3) =686589106a(4) =795758912
External references
- oeis: A187632