Number of n X n 0..4 arrays with the absolute differences of each element with its with horizontal and antidiagonal neighbors unique.
A265921
Number of n X n 0..4 arrays with the absolute differences of each element with its with horizontal and antidiagonal neighbors unique.
Terms
- a(0) =5a(1) =340a(2) =17936a(3) =542940a(4) =8821464a(5) =112139348a(6) =1135042936a(7) =15078628680a(8) =249568483336
External references
- oeis: A265921