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

A305042

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

Terms

    a(0) =1a(1) =7a(2) =5a(3) =9a(4) =15a(5) =17a(6) =40a(7) =73a(8) =87a(9) =219a(10) =433a(11) =583a(12) =1421a(13) =2954a(14) =4560a(15) =10528a(16) =22379a(17) =38588a(18) =85235a(19) =181931a(20) =338249a(21) =726130a(22) =1543719a(23) =3007403a(24) =6351135a(25) =13421225a(26) =26878019a(27) =56264157a(28) =118252672a(29) =240605844

External references