Number of (n+1)X6 0..1 arrays with the permanents of 2X2 subblocks nondecreasing rightwards and downwards.
A204720
Number of (n+1)X6 0..1 arrays with the permanents of 2X2 subblocks nondecreasing rightwards and downwards.
Terms
- a(0) =1267a(1) =26128a(2) =457635a(3) =7549845a(4) =118449078a(5) =1793675684a(6) =26575441925a(7) =387101009622
External references
- oeis: A204720