T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards.

A204039

T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards.

Terms

    a(0) =16a(1) =44a(2) =44a(3) =121a(4) =164a(5) =121a(6) =286a(7) =603a(8) =603a(9) =286a(10) =676a(11) =1758a(12) =2928a(13) =1758a(14) =676a(15) =1482a(16) =5130a(17) =10505a(18) =10505a(19) =5130a(20) =1482a(21) =3249a(22) =13040a(23) =37642a(24) =44366a(25) =37642a(26) =13040a(27) =3249a(28) =6840a(29) =33223

External references