Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 1,4,3,2,0 for x=0,1,2,3,4.
A196925
Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 1,4,3,2,0 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =7a(4) =65a(5) =1242a(6) =55546a(7) =5603265a(8) =1280956817a(9) =661075536443
External references
- oeis: A196925