Number of n X n nonnegative integer arrays with each row and column increasing from zero by 0, 1 or 2.
A202806
Number of n X n nonnegative integer arrays with each row and column increasing from zero by 0, 1 or 2.
Terms
- a(0) =1a(1) =3a(2) =32a(3) =1177a(4) =146300a(5) =60758779a(6) =83834499040
External references
- oeis: A202806