Number of (n+1)X7 0..2 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards.
A204228
Number of (n+1)X7 0..2 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards.
Terms
- a(0) =192474a(1) =12097076a(2) =694547816a(3) =21958547501a(4) =687853333430
External references
- oeis: A204228