Number of (n+2)X3 binary arrays avoiding patterns 010 and 101 in rows, columns and nw-to-se diagonals.

A203348

Number of (n+2)X3 binary arrays avoiding patterns 010 and 101 in rows, columns and nw-to-se diagonals.

Terms

    a(0) =80a(1) =244a(2) =702a(3) =2062a(4) =6032a(5) =17614a(6) =51482a(7) =150462a(8) =439760a(9) =1285280a(10) =3756472a(11) =10979006a(12) =32088238a(13) =93784004a(14) =274101634a(15) =801114300a(16) =2341409322a(17) =6843215284a(18) =20000601752a(19) =58455572974a(20) =170847560198a(21) =499334577370

External references