Number of (n+1)X4 binary arrays with no 2X2 subblock containing fewer than two 1s.

A184201

Number of (n+1)X4 binary arrays with no 2X2 subblock containing fewer than two 1s.

Terms

    a(0) =108a(1) =1028a(2) =8969a(3) =80812a(4) =721939a(5) =6468501a(6) =57909336a(7) =518574936a(8) =4643443850a(9) =41579555979a(10) =372319892218

External references