Number of (n+1)X4 0..1 arrays with the determinants of 2X2 subblocks nondecreasing rightwards and downwards.
A204611
Number of (n+1)X4 0..1 arrays with the determinants of 2X2 subblocks nondecreasing rightwards and downwards.
Terms
- a(0) =125a(1) =749a(2) =4901a(3) =31805a(4) =205117a(5) =1322417a(6) =8522985a(7) =54938417a(8) =354134921a(9) =2282874145a(10) =14716407353a(11) =94869591953a(12) =611581623337
External references
- oeis: A204611