T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with every 3X3 subblock having three strictly increasing elements in a row horizontally or vertically, exactly one way.

A204417

T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with every 3X3 subblock having three strictly increasing elements in a row horizontally or vertically, exactly one way.

Terms

    a(0) =3570a(1) =34274a(2) =34274a(3) =423416a(4) =154938a(5) =423416a(6) =2827014a(7) =781884a(8) =781884a(9) =2827014a(10) =22956524a(11) =5597126a(12) =947990a(13) =5597126a(14) =22956524a(15) =254913953a(16) =52039032a(17) =5776350a(18) =5776350a(19) =52039032a(20) =254913953a(21) =2004465237a(22) =395943745a(23) =49914501a(24) =11785518

External references