Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 0,1,0,0,0 for x=0,1,2,3,4.
A197468
Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 0,1,0,0,0 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =2a(2) =26a(3) =184a(4) =5408a(5) =165200a(6) =16544206a(7) =2117012786a(8) =779857304215
External references
- oeis: A197468