Number of nX3 0..1 arrays with every element unequal to 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero.

A304144

Number of nX3 0..1 arrays with every element unequal to 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =14a(2) =18a(3) =25a(4) =113a(5) =238a(6) =359a(7) =1309a(8) =3091a(9) =5173a(10) =15475a(11) =39432a(12) =72084a(13) =189527a(14) =495712a(15) =981404a(16) =2379279a(17) =6211445a(18) =13097776a(19) =30387724a(20) =77976438a(21) =172291180a(22) =391956305a(23) =983542082a(24) =2243798047a(25) =5079682165a(26) =12475410712a(27) =29036847557a(28) =65931275352

External references