Number of (n+1)X4 0..2 arrays with the permanents of 2X2 subblocks nondecreasing rightwards and downwards.
A205201
Number of (n+1)X4 0..2 arrays with the permanents of 2X2 subblocks nondecreasing rightwards and downwards.
Terms
- a(0) =2830a(1) =71355a(2) =1649549a(3) =30972970a(4) =560385415a(5) =9153899777a(6) =145848261106
External references
- oeis: A205201