Number of 1Xn 0..n arrays with every repeated value in every row and column equal to the previous repeated value, and new values introduced in row-major sequential order.
A268004
Number of 1Xn 0..n arrays with every repeated value in every row and column equal to the previous repeated value, and new values introduced in row-major sequential order.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =14a(4) =45a(5) =163a(6) =657a(7) =2910a(8) =14020a(9) =72860a(10) =405610a(11) =2404875a(12) =15111771a(13) =100221229a(14) =698963970a(15) =5110106721a(16) =39055225870a(17) =311266844753
External references
- oeis: A268004