Number of n X n 0..3 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.
A201228
Number of n X n 0..3 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.
Terms
- a(0) =4a(1) =2a(2) =114a(3) =1028a(4) =420662a(5) =33222962a(6) =112920979339
External references
- oeis: A201228