Number of (n+1)X2 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.
A205239
Number of (n+1)X2 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) =81a(1) =486a(2) =2990a(3) =18148a(4) =111041a(5) =677732a(6) =4143102a(7) =25302238a(8) =154597952a(9) =944323666a(10) =5769147079a(11) =35241970176a(12) =215294819906
External references
- oeis: A205239