Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,0,3,2,1 for x=0,1,2,3,4.
A196473
Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,0,3,2,1 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =5a(2) =7a(3) =35a(4) =151a(5) =5955a(6) =299659a(7) =8943355a(8) =528624118a(9) =48720477449
External references
- oeis: A196473