Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,1,1,0,0 for x=0,1,2,3,4.
A197446
Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,1,1,0,0 for x=0,1,2,3,4.
Terms
- a(0) =4a(1) =36a(2) =474a(3) =4837a(4) =52117a(5) =585194a(6) =6455759a(7) =71202438a(8) =787298158a(9) =8700460833a(10) =96129107870
External references
- oeis: A197446