Half the number of (n+1)X4 binary arrays with no 2X2 subblock containing exactly one 1.

A184191

Half the number of (n+1)X4 binary arrays with no 2X2 subblock containing exactly one 1.

Terms

    a(0) =60a(1) =561a(2) =5074a(3) =46514a(4) =425802a(5) =3901193a(6) =35741495a(7) =327471410a(8) =3000373034a(9) =27490276713a(10) =251873944520

External references