T(n,k)=Number of (n+1)X(k+1) 0..4 arrays with nondecreasing maximum of every two consecutive values in every row and column.
A250832
T(n,k)=Number of (n+1)X(k+1) 0..4 arrays with nondecreasing maximum of every two consecutive values in every row and column.
Terms
- a(0) =625a(1) =9025a(2) =9025a(3) =119025a(4) =411451a(5) =119025a(6) =1301881a(7) =16545428a(8) =16545428a(9) =1301881a(10) =13249600a(11) =516786049a(12) =1966779166a(13) =516786049a(14) =13249600a(15) =123432100a(16) =14616585449a(17) =170110220357a(18) =170110220357a(19) =14616585449a(20) =123432100a(21) =1093360356a(22) =366421422539
External references
- oeis: A250832