Number of (n+1)X3 0..2 arrays with the number of rightwards and downwards edge increases in each 2X2 subblock differing from the number in each of its horizontal and vertical neighbors.
A205240
Number of (n+1)X3 0..2 arrays with the number of rightwards and downwards edge increases in each 2X2 subblock differing from the number in each of its horizontal and vertical neighbors.
Terms
- a(0) =486a(1) =4158a(2) =36478a(3) =323806a(4) =2873148a(5) =25443411a(6) =225349124a(7) =1996606633a(8) =17681948366a(9) =156641245984
External references
- oeis: A205240