Number of (n+1)X(n+1) 0..1 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards.
A204031
Number of (n+1)X(n+1) 0..1 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards.
Terms
- a(0) =16a(1) =164a(2) =2928a(3) =44366a(4) =969528a(5) =16895850a(6) =397550036a(7) =7576693894a(8) =184631622106
External references
- oeis: A204031