Number of (n+1) X (n+1) 0..1 arrays with rows and columns of permanents of all 2 X 2 subblocks lexicographically nondecreasing, and all 2 X 2 permanents nonzero.
A204733
Number of (n+1) X (n+1) 0..1 arrays with rows and columns of permanents of all 2 X 2 subblocks lexicographically nondecreasing, and all 2 X 2 permanents nonzero.
Terms
- a(0) =7a(1) =43a(2) =409a(3) =6176a(4) =150132a(5) =5920734a(6) =384523522a(7) =42202897239
External references
- oeis: A204733