T(n,k)=Number of (n+1)X(k+1) 0..4 arrays with row and column sums nondecreasing, and no adjacent elements equal.

A233311

T(n,k)=Number of (n+1)X(k+1) 0..4 arrays with row and column sums nondecreasing, and no adjacent elements equal.

Terms

    a(0) =92a(1) =463a(2) =463a(3) =2311a(4) =7248a(5) =2311a(6) =9822a(7) =93533a(8) =93533a(9) =9822a(10) =41192a(11) =1112270a(12) =4148253a(13) =1112270a(14) =41192a(15) =160280a(16) =11993847a(17) =150257461a(18) =150257461a(19) =11993847a(20) =160280a(21) =617500a(22) =121586107a(23) =5127100320a(24) =16785959715a(25) =5127100320a(26) =121586107a(27) =617500

External references