Number of (n+2) X 3 binary arrays with each 3 X 3 subblock nonsingular.

A185526

Number of (n+2) X 3 binary arrays with each 3 X 3 subblock nonsingular.

Terms

    a(0) =174a(1) =726a(2) =3030a(3) =12630a(4) =52662a(5) =219606a(6) =915702a(7) =3818262a(8) =15921462a(9) =66389334a(10) =276830070a(11) =1154326422a(12) =4813311414a(13) =20070547926a(14) =83690183670a(15) =348971383830

External references