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

A205206

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

Terms

    a(0) =81a(1) =491a(2) =491a(3) =2830a(4) =6138a(5) =2830a(6) =14206a(7) =71355a(8) =71355a(9) =14206a(10) =68508a(11) =717013a(12) =1649549a(13) =717013a(14) =68508a(15) =311076a(16) =7041879a(17) =30972970a(18) =30972970a(19) =7041879a(20) =311076a(21) =1375313a(22) =65935448a(23) =560385415a(24) =1099532113a(25) =560385415a(26) =65935448a(27) =1375313a(28) =5904417

External references