T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock commuting with each horizontal and vertical neighbor 3X3 subblock.

A186881

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock commuting with each horizontal and vertical neighbor 3X3 subblock.

Terms

    a(0) =262144a(1) =2428a(2) =2428a(3) =19236a(4) =421a(5) =19236a(6) =46583a(7) =1201a(8) =1201a(9) =46583a(10) =104701a(11) =6829a(12) =6712a(13) =6829a(14) =104701a(15) =186096a(16) =14221a(17) =20152a(18) =20152a(19) =14221a(20) =186096a(21) =277659a(22) =18517a(23) =28984a(24) =79096a(25) =28984a(26) =18517a(27) =277659a(28) =322910a(29) =21661

External references