T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no 2X2 subblock trace equal to any horizontal or vertical neighbor 2X2 subblock trace.

A185933

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no 2X2 subblock trace equal to any horizontal or vertical neighbor 2X2 subblock trace.

Terms

    a(0) =256a(1) =3392a(2) =3392a(3) =45184a(4) =130944a(5) =45184a(6) =601280a(7) =5113920a(8) =5113920a(9) =601280a(10) =8003200a(11) =199644672a(12) =590014464a(13) =199644672a(14) =8003200a(15) =106519232a(16) =7794298816a(17) =67954333216a(18) =67954333216a(19) =7794298816a(20) =106519232a(21) =1417744768a(22) =304295071104

External references