Number of n X n symmetric 0..4 arrays with no element equal to the sum mod 5 of any two of its horizontal and vertical neighbors.
A193222
Number of n X n symmetric 0..4 arrays with no element equal to the sum mod 5 of any two of its horizontal and vertical neighbors.
Terms
- a(0) =5a(1) =64a(2) =1212a(3) =46984a(4) =3644772a(5) =576095092a(6) =189451753044
External references
- oeis: A193222