Number of (n+1)X3 0..3 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing.
A205274
Number of (n+1)X3 0..3 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing.
Terms
- a(0) =2504a(1) =87912a(2) =2940732a(3) =77255835a(4) =1905682493a(5) =40440032498a(6) =815438067758
External references
- oeis: A205274