Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 2,3,1,1,0 for x=0,1,2,3,4.
A197496
Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 2,3,1,1,0 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =1a(2) =22a(3) =181a(4) =7845a(5) =755338a(6) =182232300a(7) =122868970059
External references
- oeis: A197496