Number of n X n 0..4 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.
A200983
Number of n X n 0..4 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.
Terms
- a(0) =5a(1) =10a(2) =92a(3) =1225a(4) =4919a(5) =752271a(6) =29555346a(7) =1278883650a(8) =65182166083a(9) =731587297275
External references
- oeis: A200983