Number of n X n nonnegative integer arrays with each row and column increasing from zero by 0, 1, 2 or 3.
A202918
Number of n X n nonnegative integer arrays with each row and column increasing from zero by 0, 1, 2 or 3.
Terms
- a(0) =1a(1) =4a(2) =90a(3) =11016a(4) =7083180a(5) =23491810780
External references
- oeis: A202918