T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no 2X2 subblock having its minimum diagonal element less than its minimum antidiagonal element.

A250965

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no 2X2 subblock having its minimum diagonal element less than its minimum antidiagonal element.

Terms

    a(0) =170a(1) =1592a(2) =1592a(3) =14423a(4) =34988a(5) =14423a(6) =130025a(7) =768855a(8) =768855a(9) =130025a(10) =1172956a(11) =17233753a(12) =42534386a(13) =17233753a(14) =1172956a(15) =10588744a(16) =390286993a(17) =2395598690a(18) =2395598690a(19) =390286993a(20) =10588744a(21) =95612685a(22) =8862302446a(23) =134817198768

External references