T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with the difference between each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise.
A235679
T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with the difference between each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise.
Terms
- a(0) =16a(1) =58a(2) =58a(3) =208a(4) =380a(5) =208a(6) =742a(7) =2456a(8) =2456a(9) =742a(10) =2644a(11) =15790a(12) =28584a(13) =15790a(14) =2644a(15) =9418a(16) =101398a(17) =330840a(18) =330840a(19) =101398a(20) =9418a(21) =33544a(22) =650928a(23) =3824528a(24) =6894210a(25) =3824528a(26) =650928a(27) =33544a(28) =119470a(29) =4178316
External references
- oeis: A235679