Number of n X 3 0..1 arrays with every element unequal to 0, 1, 2, 3, 6 or 8 king-move adjacent elements, with upper left element zero.

A316284

Number of n X 3 0..1 arrays with every element unequal to 0, 1, 2, 3, 6 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =4a(1) =21a(2) =42a(3) =125a(4) =361a(5) =987a(6) =2840a(7) =8177a(8) =23078a(9) =66092a(10) =189934a(11) =542549a(12) =1555968a(13) =4472084a(14) =12834117a(15) =36874076a(16) =106057815a(17) =304978090a(18) =877344581a(19) =2525161569a(20) =7268401508a(21) =20925202372a(22) =60256501068a(23) =173532468268a(24) =499807464421

External references