T(n,k)=Number of (n+1)X(k+1) 0..5 arrays with every 2X2 subblock commuting with each of its horizontal and vertical 2X2 subblock neighbors.

A186486

T(n,k)=Number of (n+1)X(k+1) 0..5 arrays with every 2X2 subblock commuting with each of its horizontal and vertical 2X2 subblock neighbors.

Terms

    a(0) =1296a(1) =713a(2) =713a(3) =7988a(4) =1638a(5) =7988a(6) =7147a(7) =3343a(8) =3343a(9) =7147a(10) =50755a(11) =13342a(12) =49225a(13) =13342a(14) =50755a(15) =50359a(16) =23790a(17) =36032a(18) =36032a(19) =23790a(20) =50359a(21) =306067a(22) =77358a(23) =306279a(24) =187120a(25) =306279a(26) =77358a(27) =306067a(28) =340221a(29) =146406

External references