Number of nX3 0..1 arrays with every element unequal to 0, 2, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

A306131

Number of nX3 0..1 arrays with every element unequal to 0, 2, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =8a(2) =13a(3) =64a(4) =240a(5) =842a(6) =3302a(7) =12740a(8) =48468a(9) =187112a(10) =723138a(11) =2786916a(12) =10760740a(13) =41576054a(14) =160572130a(15) =620281406a(16) =2396512260a(17) =9258772148a(18) =35771455196a(19) =138208433662a(20) =533989093282

External references