Number of (n+1)X3 binary arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace.

A185743

Number of (n+1)X3 binary arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace.

Terms

    a(0) =24a(1) =104a(2) =544a(3) =2568a(4) =12656a(5) =62112a(6) =304584a(7) =1494072a(8) =7329384a(9) =35956128a(10) =176387688a(11) =865292240a(12) =4244818752a(13) =20823589768a(14) =102153153752a(15) =501127152040

External references