T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with nondecreasing sum of every three consecutive values in every row and column.

A250868

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with nondecreasing sum of every three consecutive values in every row and column.

Terms

    a(0) =262144a(1) =4096000a(2) =4096000a(3) =64000000a(4) =128000000a(5) =64000000a(6) =1000000000a(7) =4000000000a(8) =4000000000a(9) =1000000000a(10) =8000000000a(11) =125000000000a(12) =250000000000a(13) =125000000000a(14) =8000000000a(15) =64000000000

External references